Product ID: SPDB93526

Name:  Scapolite and Biotite Crystals

0 grams and measures 30x16x6 mm

Quebec Canada

This is a fabulous specimen of bladed kyanite and quartz mined in Barra do Salinas district

Cassiterite Crystals | Black | Lot in a Jar | Tin Gulch, Grant Co. | New Mexico | SO24 Impactite-in-a-Box Product ID: SPDB93526Most cassiterite crystals have opaque, dark colors, usually black or brown. Lighter colored, facetable crystals are much rarer and usually occur in small fragments. With a dispersion or fire almost twice that of diamond as well as vitreous to adamantine luster, transparency, and a hardness of 6 7, faceted cassiterites would make good jewelry stones. Cassiterite is a durable gemstone with tremendous dispersive fire, especially visible in properly cut