This is such an interesting specimen of Amethyst from India.  It has a very odd crystal habit. 

This is a fantastic and very affordable specimen of Cuprite from Rubstovskoe in Russia.

A very nice sample of Magnetite from the Magnet Cove area in Arkansas, this one has been in collections since it was collected in 1995.

A nice mineral specimen of Varsicite from Arkansas.  

A nice crystal specimen of Amethyst with scepter growth from the Chibuku Mine in Zimbabwe.

This is a great combination mineral specimen of Shattuckite, Quartz, & Mottramite from the Kaokoveld Plateau in Namibia. 

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.

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

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

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.

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.

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.

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.

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.

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. 

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. 

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

A rare iron phosphate mineral, Strengite, from Arkansas.