Big specimen! bigger than the size of my hand, and I have a big hand. The Quartz sits in the upper middle and also in the back of the specimen with well sharped edge crystals all around it. Coming all the way from Bulgaria. 

Location:

Madan Orefield 

Rhodope Mountains

Smolyan Oblast, Bulgaria

Size:

L: 18.0 cm W: 3.5 cm H: 14.7

Brought to you by KQ Minerals / Cowboy Crystals 

-Keith Hayes Collection 

Big piece of Sphalerite. A little bigger than the size of your palm. Crystals turn red-ish under lighting. Tiny layer of crystals on the back side as well. 

Location:

Tri-State District

near Picher, Ottawa Co.

Oklahoma 

Size: 

L: 11.3 cm W: 6.0 cm H: 8.5 cm 

Brought to you by KQ Minerals / Cowboy Crystals 

-Keith Hayes Collection