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5 out of 5

Sidewinder Minerals

  • $65.00

    Beautiful MALACHITE specimen in botryoidal form. Rich, green color. This piece glistens in the light. Collected in the 1990’s from the Mashamba West Mine in the Democratic Republic of Congo. From the collection of Roger Maynard, Roger is a friend and was a long-time geologist with the US Geological Survey in New Mexico.

    MALACHITE is a copper carbonate mineral, frequently found with Azurite. It occurs as a secondary mineral in the oxidation zone of copper deposits. Malachite is a banded light and dark green crystal with a dull and silky luster. Its various crystal habits include massive forms that are botryoidal, stalactitic or globular. The crystals are fibrous and are frequently found as pseudomorphs of Azurite. Malachite is very popular mineral among collectors and lapidary and jewelry artists. It belongs to the Monoclinic Crystal System. Hardness is 3.5 – 4 on the Mohs’s scale.

    Metaphysical properties: Malachite is an important protection stone. It absorbs negative energies and pollutants. Malachite is an extremely versatile healing stone. Malachite lowers blood pressure and treats asthma, epilepsy, fractures, swollen joints, growths, travel sickness, vertigo, and tumors. It enhances the immune system. Malachite can assist in restoring strength and vitality after illness and in rebuilding or repairing tissue after surgery.

    LocationMashamba West Mine, Kolwezi mining district, Lualaba, Democratic Republic of Congo

    Specimen size: 4.5 x 4.1 x 1.5 inches

    Specimen weight: 235 grams (8.3 ounces)

    AVAILABILITY: 1 in stock

  • $65.00

    TOURMALINE, variety UVITE. The crystal has dark brown color with a hint of red on one of the edges. Red Uvite crystals are far less common then green ones. Luster is vitreous. The crystal is 1.4 inch in length. The white crystals are Calcite rhombohedrons. From the Brumado area of Bahia, Brazil.

    UVITE is a member of the Tourmaline group. It is a calcium, magnesium, aluminum, boro-silicate mineral. The crystal system is Trigonal. Hardness is 7 – 7.5 on the Mohs scale. Uvite occurs primarily in calcium- and boron-rich, metamorphic and skarn-type environments. In 2020, the International Mineralogical Association redefined Uvite as two separate minerals that are end-members of a solid-solution series: Uvite now refers to the hydroxyl-dominant end-member, while Fluor-uvite is the correct name for the fluorine-dominant end-member.

    LocationPomba pit, Serra das Éguas, Brumado, Bahia, Brazil

    Metaphysical propertiesUvite diminishes fears and promotes self-confidence, awakens one from illusions, brings an awareness of reality, and enhances fortitude.

    Specimen size: 1.4 x 1.3 x 0.8 inches

    Specimen weight: 20 grams (0.7 ounces)

    AVAILABILITY: 1 in stock

  • $215.00

    Needles of QUARTZ on cluster of prismatic EPIDOTE crystals. The Epidote crystals are dark green in color with a vitreous luster. The largest Epidote crystal is 1.6 inches in length. Epidote is a calcium aluminum iron sorosilicate mineral. It is considered a semi-precious stone. 

    LocationGreen Monster Mountain, Prince of Wales Island, Ketchikan Mining District, Prince of Wales-Hyder Census Area, Alaska, USA

    World class epidotes have been found at Prince of Wales Island in Alaska. Here, Epidote
    occurs as large, dark green, tabular crystals in metamorphosed limestone.

    Metaphysical PropertiesEpidote has the ability to increase your energy levels and is useful for strengthening the physical body.  This stone facilitates a more complete assimilation of nutrients.  It stimulates the immune system and aids in the body’s healing process. Epidote increases your personal power and increases memory, making it a helpful when looking for lost objects. This stone is helpful for stamina, the nervous and immune systems, cellular memory and dehydration. It supports the brain, thyroid, liver, gallbladder and adrenal glands. Epidote immediately raises the vibration in areas that are congested, filled with debris or overly dense. It can help you find the core patterns behind physical disease and can assist you in moving into a hopeful and positive emotional state to support general healing. This stone assures you that all your basic needs are met with an abundance left over to share with others. Use this stone to increase good health and the ability to love fully and completely.

    Specimen size: 2.9 x 2.5 x 1.8 inches

    Specimen weight: 142 grams (5.0 ounces)

    AVAILABILITY: 1 in stock

  • $65.00

    TOURMALINE, variety UVITE. Thumbnail-size crystal has dark red color. The red is visible under direct lighting. Red uvite crystals are far less common then green ones. Luster is vitreous. The crystal is 1.0 inch in length. From the Brumado area of Bahia, Brazil.

    UVITE is a member of the Tourmaline group. It is a calcium, magnesium, aluminum, boro-silicate mineral. The crystal system is Trigonal. Hardness is 7 – 7.5 on the Mohs scale. Uvite occurs primarily in calcium- and boron-rich, metamorphic and skarn-type environments. In 2020, the International Mineralogical Association redefined Uvite as two separate minerals that are end-members of a solid-solution series: Uvite now refers to the hydroxyl-dominant end-member, while Fluor-uvite is the correct name for the fluorine-dominant end-member.

    LocationPomba pit, Serra das Éguas, Brumado, Bahia, Brazil

    Metaphysical propertiesUvite diminishes fears and promotes self-confidence, awakens one from illusions, brings an awareness of reality, and enhances fortitude.

    Specimen size: 1.0 x 0.5 x 0.5 inches

    Specimen weight: 10 grams (0.4 ounces)

    AVAILABILITY: 1 in stock

  • $250.00

    TOURMALINE, variety RUBELLITE on Quartz. Three, translucent crystals with cranberry red color. Luster is vitreous. Sides are striated. The longest crystal is 1.2 inches in length. From the famous Cruzeiro Mine in Brazil.

    This piece is from the collection of Roger Maynard. Roger is a friend and was a long-time geologist with the US Geological Survey in New Mexico.

    RUBELLITE is the red, lithium-rich variety of the Tourmaline group. It is a sodium, lithium, aluminum, boro-silicate mineral. The crystal system is Trigonal. Hardness is 7 – 7.5 on the Mohs scale. 

    LocationCruzeiro mine, São José da Safira, Minas Gerais, Brazil

    The Cruzeiro Mine is one of the most important gem and specimen mines in the world. It has been mined for tourmalines and other mineral specimens since the 1950’s. There are at least five distinct pegmatites worked in the mine.

    Specimen size: 1.8 x 0.8 x 0.8 inches

    Specimen weight: 15 grams (0.5 ounces)

    AVAILABILITY: 1 in stock

  • $215.00

    Needles of QUARTZ on cluster of prismatic EPIDOTE crystals. The Epidote crystals are dark green in color with a vitreous luster. Epidote is a calcium aluminum iron sorosilicate mineral. It is considered a semi-precious stone. 

    LocationGreen Monster Mountain, Prince of Wales Island, Ketchikan Mining District, Prince of Wales-Hyder Census Area, Alaska, USA

    World class epidotes have been found at Prince of Wales Island in Alaska. Here, Epidote
    occurs as large, dark green, tabular crystals in metamorphosed limestone.

    Metaphysical PropertiesEpidote has the ability to increase your energy levels and is useful for strengthening the physical body.  This stone facilitates a more complete assimilation of nutrients.  It stimulates the immune system and aids in the body’s healing process. Epidote increases your personal power and increases memory, making it a helpful when looking for lost objects. This stone is helpful for stamina, the nervous and immune systems, cellular memory and dehydration. It supports the brain, thyroid, liver, gallbladder and adrenal glands. Epidote immediately raises the vibration in areas that are congested, filled with debris or overly dense. It can help you find the core patterns behind physical disease and can assist you in moving into a hopeful and positive emotional state to support general healing. This stone assures you that all your basic needs are met with an abundance left over to share with others. Use this stone to increase good health and the ability to love fully and completely.

    Specimen size: 1.9 x 1.2 x 1.0 inches

    Specimen weight: 40 grams (1.4 ounces)

    AVAILABILITY: 1 in stock

  • $15.00

    Black AEGIRINE crystals that have grown in salmon-pink SERANDITE. From the famous locality of Mont Saint-Hilaire in Quebec, Canada.

    AEGIRINE is a sodium iron silicate mineral with hardness of 6 and in the Monoclinic crystal system.

    SERANDITE is a sodium, manganese silicate mineral. Serandite is a member of the  Wollastonite group and is the manganese analogue of Pectolite (e.g., Larimar). Serandite belongs to the Triclinic crystal system. Hardness is 5 – 5.5 on the Mohs scale. 

    LocationPoudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

    Mont Saint-Hilaire is one of the most famous mineral localities in the world. Some 430 valid minerals are known from this location. At Mont Saint-Hilaire, Quebec, Serandite occurs in sodalite xenoliths and pegmatites cutting syenites.

    Specimen size: 1.7 x 0.5 x 0.4 inches

    Specimen weight: 9 grams (0.3 ounces)

    AVAILABILITY: 1 in stock

  • $30.00

    TOURMALINE, variety DRAVITE. Large, dark brown crystal. Muscovite coats what appears to be a small Dravite crystal on the terminated end of the main crystal. Luster is vitreous. Sides are striated. The crystal is 1.6 inches in length. From the Power’s Farm location in New York, famous for its Dravite and Schorl Tourmalines.

    This piece is from the collection of Roger Maynard. Roger is a friend and was a long-time geologist with the US Geological Survey in New Mexico.

    DRAVITE is a dark brown to black variety of the Tourmaline group. It is a sodium, magnesium, aluminum, boro-silicate mineral. The crystal system is Trigonal. Hardness is 7 on the Mohs scale. 

    LocationPower’s Farm, Pierrepont, St. Lawrence Co., New York, USA

    Specimen size: 1.6 x 1.1 x 0.9 inches

    Specimen weight: 55 grams (1.9 ounces)

    AVAILABILITY: 1 in stock

  • $875.00

    TOURMALINE, variety RUBELLITE. Single, translucent crystal with cranberry red color. One end is terminated. Luster is vitreous. Sides are striated. The crystal is 1.9 inches in length. Pictures show with and without a light on the side to illustrate the translucency. From the famous Cruzeiro Mine in Brazil.

    This piece is from the collection of Roger Maynard. Roger is a friend and was a long-time geologist with the US Geological Survey in New Mexico.

    RUBELLITE is the red, lithium-rich variety of the Tourmaline group. It is a sodium, lithium, aluminum, boro-silicate mineral. The crystal system is Trigonal. Hardness is 7 – 7.5 on the Mohs scale. 

    LocationCruzeiro mine, São José da Safira, Minas Gerais, Brazil

    The Cruzeiro Mine is one of the most important gem and specimen mines in the world. It has been mined for tourmalines and other mineral specimens since the 1950’s. There are at least five distinct pegmatites worked in the mine.

    Specimen size: 1.9 x 0.5 x 0.5 inches

    Specimen weight: 14.5 grams (0.5 ounces)

    AVAILABILITY: 1 in stock

  • $25.00

    NEVADA – JACKPOT! Mint condition. One of my favorite books from the monograph series from Lithographie, Inc. Some 124 pages with 16 chapters written by experts around the world. Chapters on gold and silver mining, barite from Meikle mine, turquoise, opal, garnets, stibnite and famous locations such as Hallelujah Junction and Majuba Hill mine. A map of Nevada Mineral Localities is included.

    AVAILABILITY: 1 in stock

  • $25.00

    FLUORITE – THE COLLECTOR’S CHOICE. Mint condition. One of my favorite books from the monograph series from Lithographie, Inc. Some 120 pages with 23 chapters written by experts around the world. Chapters on mineralogy, geology, color, fluorescence, and famous locations in United States, Canada, Mexico, Russia, China, Japan, Pakistan, South Africa and Morocco. My favorite chapter is written by Ross Lillie on The Great Southern Illinois Fluorspar Deposits.

    AVAILABILITY: 1 in stock

  • $25.00

    TOPAZ – PERFECT CLEAVAGE. Mint condition. One of my favorite books from the monograph series from Lithographie, Inc. Some 100 pages with 16 chapters written by experts around the world. Chapters on mineralogy, geology, color, cat’s eye, and famous locations in Colorado, Utah, Russia, Japan, Pakistan, Brazil, Zimbabwe and Mongolia. My favorite chapter is written by Dave Bunk on Colorado Topaz.

    AVAILABILITY: 1 in stock

  • $625.00

    Beautiful cluster of transparent BARITE crystals from the classic location of Meikle Mine, Elko, County, Nevada. Root beer color. Adamantine luster. The largest crystal is 1.25 inches wide. Any white that you may see in the pictures is only a reflection from faces of the crystals.

    AVAILABILITY: 1 in stock

  • $85.00

    Beautiful LAPIS LAZULI Pendant set in sterling silver. The blue color is gorgeous. Lapis Lazuli is a powerful crystal for activating the higher mind and enhancing intellectual ability. It stimulates the desire for knowledge, truth and understanding, and aids the process of learning. It is excellent for enhancing memory.

    AVAILABILITY: 1 in stock

  • $65.00

    Beautiful Carnelian OBELISK carving. Cut and polished to show off the banding in the Carnelian Agate. Dark red and white color. Height is 6.0 inches. The Carnelian is from Brazil. From the collection of Bruce Brown (Denver, Colorado).

    AVAILABILITY: 1 in stock

  • $150.00

    Cluster of large, purple, translucent FLUORITE crystals on white Quartz. Most of the cubic crystals are beveled and zoned with dark purple edges. The Fluorite fluoresces Blue under long-wave UV light. Specimen is 6.3 inches in length. Largest Fluorite cube is 0.6 inches long. 

    AVAILABILITY: 1 in stock

  • $175.00

    Cluster of emerald-green DIOPTASE crystals with white Calcite crystals. The largest dioptase crystal is 0.4 inches long. Luster is adamantine. Crystals are rhombohedral shape. The specimen is from the famous TSUMEB Mine in Namibia.

    AVAILABILITY: 1 in stock

  • $850.00

    Rare combination of AMAZONITE and SMOKY QUARTZ crystals from the famous SMOKY HAWK MINE in Colorado. Largest Smoky Quartz crystal is 1.5 inches and terminated. Great blue-green color on the Amazonite crystals. Specimen is 7.6 inches in length.

    AVAILABILITY: 1 in stock

  • $1,995.00

    At least 30 individual, emerald-green DIOPTASE crystals sprinkled on a Dolomite matrix. The largest dioptase crystal is 0.3 inches long. Luster is adamantine. Crystals are rhombohedral shape. The specimen is from the famous TSUMEB Mine in Namibia. From the collection of Kim Cathcart.

    AVAILABILITY: 1 in stock

  • $1,995.00

    Cluster of large emerald-green DIOPTASE crystals on matrix. The two largest dioptase crystals are 0.5 inches long. Luster is adamantine. Crystals are rhombohedral shape. The specimen is from the famous TSUMEB Mine in Namibia. Custom base. Minor white Calcite crystals are sprinkled over the specimen.

    AVAILABILITY: 1 in stock

  • $2,950.00

    Specimen of brilliant GOLD crystals on Sericite matrix. The specimen weighs 54 grams (1.9 ounces). Length is 1.8 inches. El Dorado County, California is famous for its gold production since the California Gold Rush in 1849. 

    AVAILABILITY: 1 in stock

  • $750.00

    Brilliant GOLD LEAF from the famous Little Jonny Mine in Leadville, Colorado. The gold weighs 1.1 grams (0.0387 ounces).

    AVAILABILITY: 1 in stock

  • $580.00

    ELBAITE TOURMALINE, variety WATERMELON. Single crystal with green color on the ends and pink in the middle. One end is terminated, with minor damage. Luster is vitreous. The crystal is 1.3 inches in length. Pictures show with and without a light on the side to illustrate the translucency. From the famous Himalaya Mine in California.

    AVAILABILITY: 1 in stock

  • $750.00

    Brilliant GOLD LEAF crystals, thumbnail size. Weighs 1.6 grams (0.055 ounces). Length is 0.9 inches. Mariposa County, California is famous for its gold production since the California Gold Rush in 1849. From the collection of Beau Gordon.

    AVAILABILITY: 1 in stock

  • $1,025.00

    Brilliant GOLD LEAF from the famous Little Jonny Mine in Leadville, Colorado. The gold weighs 1.8 grams (0.063 ounces).

    AVAILABILITY: 1 in stock

  • $320.00

    Beautiful REALGAR crystal from a classic location in 1992. Brilliant red color with a good termination on one end. The crystal is 1.3 inches in length. Realgar is light sensitive. Realgar is an arsenic sulfide mineral. This piece is from the collection of Roger Maynard. Roger is a friend and was a long-time geologist with the US Geological Survey in New Mexico.

    AVAILABILITY: 1 in stock

  • $175.00

    ELBAITE crystal with a blue INDICOLITE cap. The blue cap is translucent. Luster is vitreous. The crystal is 1.0 inch in length. Albite is the small white spot on the crystal. This specimen is thumbnail size. ELBAITE is a member of the Tourmaline group. INDICOLITE is the blue variety of Elbaite.

    AVAILABILITY: 1 in stock

  • $110.00

    Peach colored, translucent TOPAZ crystal. The terminated end is vitreous but all of the sides are adamantine. There is conchoidal fracturing on one side and the bottom. Topaz is the birthstone for November. This piece is from the collection of Roger Maynard. Roger is a friend and was a long-time geologist with the US Geological Survey in New Mexico.

    AVAILABILITY: 1 in stock

  • $100.00

    AQUAMARINE is the sky-blue to sea-green gem variety of BERYL. This Aquamarine is blue in color, gemmy, and transparent. The specimen is terminated with excellent crystal structure. The sides are adamantine while the top is vitreous. There is minor Muscovite (Mica). This piece is from the collection of Roger Maynard. Roger is a friend and long-time geologist with the US Geological Survey in New Mexico.

    AVAILABILITY: 1 in stock

  • $150.00

    HESSONITE is a variety of GROSSULAR GARNET. This specimen is orange in color, gemmy and translucent. Luster is adamantine and size is thumbnail (1.0 inch). From the famous Jeffrey Mine in Quebec, Canada. This piece is from the collection of Roger Maynard. He is a friend and long-time geologist with the US Geological Survey in New Mexico.

    AVAILABILITY: 1 in stock

  • $265.00

    Cluster of large emerald-green Dioptase crystals on matrix. The two largest dioptase crystals are 0.9 inches long. Luster is vitreous. Crystals are rhombohedral shape. The specimen is from the Kaokoveld plateau in Namibia.

    AVAILABILITY: 1 in stock

  • $220.00

    Peach colored TOPAZ crystal. The terminated end is rough but all of the sides are transparent. The white mineral is Albite (Feldspar). The Topaz can be cut into a gemstone. Topaz is the birthstone for November. This piece is from the collection of Roger Maynard. Roger is a friend and was a long-time geologist with the US Geological Survey in New Mexico.

    AVAILABILITY: 1 in stock

  • $260.00

    Cluster of green PERIDOT crystals. Peridot is a green, gemmy variety of Forsterite (Olivine). The largest Peridot crystal is 1.1 inches in length. From Pakistan. Peridot is a highly desirable precious gemstone. Peridot is the birthstone for the month of August and the 16th wedding anniversary gemstone. This piece is from the collection of Roger Maynard. Roger is a friend and long-time geologist with the US Geological survey in New Mexico.

    AVAILABILITY: 1 in stock

  • $110.00

    HESSONITE is a variety of GROSSULAR GARNET. This specimen is orange in color, gemmy and translucent. Luster is adamantine and size is thumbnail (0.9 inches). From the famous Jeffrey Mine in Quebec, Canada. This piece is from the collection of Roger Maynard. He is a friend and long-time geologist with the US Geological Survey in New Mexico.

    AVAILABILITY: 1 in stock

  • $160.00

    Two cubic crystals of the rare mineral BOLEITE. Boleite contains silver, copper, lead and other elements. The larger crystal has a face of 0.4 inches with noticeable wear on the lower half. The smaller cube has no damage. From the type locality of the Boleo District of Baja California Sur, Mexico. The luster is vitreous.

    AVAILABILITY: 1 in stock

  • $65.00

    Reddish-Orange ball of SPESSARTINE, a member of the GARNET Group. The ball lies on a terminated QUARTZ crystal with minor Muscovite and Albite.

    AVAILABILITY: 1 in stock

  • $165.00

    Two blue, translucent TOURMALINE, variety ELBAITE, crystals with pink LEPIDOLITE Mica from the famous Cruzeiro mine in Brazil. Minor white Calcite. Luster is vitreous. The longest crystal is 1.2 inches. This specimen is thumbnail size as it fits in a 1.25 inch perky box. Pictures are with and without a direct light on the side of the crystals to show the blue color and translucency. 

    AVAILABILITY: 1 in stock

  • $340.00

    Large, translucent SCHEELITE crystal with a contact twin. The largest face is 1.4 inches long. Brilliant golden-yellow color. It fluoresces blue under short wave UV light. The matrix is silvery MUSCOVITE. The specimen is from the famous Pingwu mine in China. Scheelite is a major ore for Tungsten. This specimen is from the collection of Roger Maynard. Roger is a friend and was a long-time geologist with the US Geological Survey.

    AVAILABILITY: 1 in stock

  • $115.00

    Beautiful cluster of green TSAVORITE which is a variety of GROSSULAR (Garnet). The translucent Tsavorite crystals are on a matrix of silvery Graphite. The largest Tsavorite crystal is 0.4 inches. Green color is from traces of chromium. Luster is vitreous.  This specimen is from the type locality of Merelani Hills, Tanzania.

    AVAILABILITY: 1 in stock

  • $25.00

    High quality MOSASAURUS Tooth with sharp edges, perfect tip. The bottom provides a good view of the enamel and dentin. This tooth is from late Cretaceous age, about 70 million years ago. Length is 1.8 inches. Slight wear on one edge.

    AVAILABILITY: 1 in stock

  • $65.00

    This brilliant cluster of BRAZILIANITE crystals is translucent. The longest crystal is 1.0 inch. Color is green with a hint of yellow. The luster is vitreous. This specimen is from the collection of Roger Maynard. Roger is a friend and was a long-time geologist with the US Geological Survey.

    AVAILABILITY: 1 in stock

  • $150.00

    Slice from a cluster of RHODOCHROSITE STALACTITES from the famous Capillitas mine in Argentina. The dozens of creme-colored “straws” are quite striking. Three years ago, the mine was taken over by the government to mine silver and copper. No more Rhodochrosite will come from this mine.

    AVAILABILITY: 1 in stock

  • $180.00

    Cross section of a RHODOCHROSITE STALACTITE from the famous Capillitas mine in Argentina. Since most of the Rhodochrosite from this mine is sold to make jewelry, it is priced according to weight. This piece weighs 25 grams. At US$8 per gram, the price is $200. Three years ago, the mine was taken over by the government to mine silver and copper. No more Rhodochrosite will come from this mine.

    AVAILABILITY: 1 in stock

  • $300.00

    Cross section of a RHODOCHROSITE STALACTITE from the famous Capillitas mine in Argentina. Since most of the Rhodochrosite from this mine is sold to make jewelry, it is priced according to weight. This piece weighs 42 grams. At US$8 per gram, the price is $336. Three years ago, the mine was taken over by the government to mine silver and copper. No more Rhodochrosite will come from this mine.

    AVAILABILITY: 1 in stock

  • $135.00

    Cluster of bipyramidal CALCITE crystals with a maroon color, most likely from inclusions of iron. The largest crystal is 1.5 inches in length. The specimen is museum size, 6.1 inches in length. This specimen is from the collection of Roger Maynard. Roger is a friend and was a long-time geologist with the US Geological Survey.

    AVAILABILITY: 1 in stock

  • $85.00

    This piece glitters! Stunning color contrast of green Siderite “Blades” with brassy iridescent Chalcopyrite, whitish Calcite, and gray Tetrahedrite crystals in this specimen. The green blades of Siderite in this piece are very rare! Several of the Siderite blades are at least 0.5 inch long. The Calcite crystals are flattened and translucent. The luster of the Siderite is vitreous while the Chalcopyrite and Tetrahedrite have a brilliant metallic luster.

    AVAILABILITY: 1 in stock

  • $200.00

    Cluster of large, green, translucent FLUORITE crystals with several CALCITE crystals. The Fluorite fluoresces Blue under long-wave UV light. Specimen is 6.1 inches in length. Largest Fluorite cube is 3.5 inches long. All Fluorite crystals have beveled edges, usually with etching. This specimen is from the collection of Roger Maynard. Roger is a friend and was a long-time geologist with the US Geological Survey.

    AVAILABILITY: 1 in stock

  • $25.00

    Stibnite is an Antimony Sulfide mineral. This specimen has one primary Stibnite crystal 5.4 inches long that is terminated at one end. The color is silver-gray. It has a metallic luster. The piece has many minor Stibnite crystals at one end. 

    AVAILABILITY: 1 in stock

  • $80.00

    This specimen is entirely translucent Hyalite Opal except for a little bit of dirt on the bottom that I could not clean off. The Hyalite fluoresces a brilliant green under a short-wave UV light. 

    AVAILABILITY: 1 in stock

  • $80.00

    The Hyalite Opal is the clear, globular layer on top of the white Milk Opal in this specimen. The Hyalite fluoresces a brilliant green under a short-wave UV light. 

    AVAILABILITY: 1 in stock

  • $150.00

    Reddish-Pink RHODOCHROSITE with minor Tetrahedrite and Chalcopyrite from The Sweet Home Mine in Colorado.

    AVAILABILITY: 1 in stock

  • $125.00

    Reddish-Pink RHODOCHROSITE with minor Tetrahedrite and Pyrite from The Sweet Home Mine in Colorado.

    AVAILABILITY: 1 in stock

  • $80.00

    Reddish-Pink RHODOCHROSITE with minor Galena and Pyrite from The Sweet Home Mine in Colorado.

    AVAILABILITY: 1 in stock

  • $30.00

    Vitreous black TOURMALINE from the Harney Peak Pegmatite of South Dakota.

    AVAILABILITY: 1 in stock

  • $35.00

    Cluster of brilliant emerald-green Dioptase crystals on matrix. The largest dioptase crystal is 0.5 inches. Crystals are rhombohedral shape. The specimen is from the type location for dioptase: Altyn-Tyube deposit, Karaganda Region, Kazakhstan.

    AVAILABILITY: 1 in stock

  • $25.00

    Unique specimen of white Colemanite crystals. A calcium borate mineral from Death Valley, California. The specimen was legally recovered prior to 2011.

    Location: Sigma Pit, Ryan District, Death Valley, California, USA

    Specimen size: 16.9 x 14.2 x 8.8 cm (6.7 x 5.6 x 3.5 inch) Cabinet

    Specimen weight: 1,135 gr (2 lb 8.0 oz)

    AVAILABILITY: 1 in stock

  • $100.00

    Museum-size Beryl variety Goshenite, with Scheelite and Calcite on Muscovite combo

    AVAILABILITY: 1 in stock

  • $190.00

    Double-terminated, Scalenohedral Rhodochrosite from Uchucchacua Mine, Peru

    Very pretty and showy gem lustrous red scalenohedral crystals of rhodochrosite are set on matrix. The largest rhodochrosite crystal is double-terminated and measures 17 mm in length. Excellent cherry-red color. Glassy to Vitreous luster.

    Location: Uchucchacua Mine, Oyon Province, Lima Department, Peru

    Specimen size: 5.0 x 3.4 x 3.2 cm (2.0 x 1.3 x 1.3 inch) Miniature

    Specimen weight: 70 grams (2.5 oz)

    AVAILABILITY: 1 in stock

  • $90.00

    Stunning color contrast of green Siderite “Blades” with brassy, iridescent Chalcopyrite crystals in this specimen. Several of the Siderite blades are 1-inch long. The luster of the Siderite is vitreous to pearly while the Chalcopyrite has a brilliant metallic luster.

    AVAILABILITY: 1 in stock

  • $85.00

    Large Hessonite crystals with adamantine luster. Color is reddish-orange to brown. Largest Hessonite crystal is 4-cm long. Another is 2.7-cm. Minor Vesuvianite (green) in matrix.

    AVAILABILITY: 1 in stock

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