Dioptase & Quartz on Calcite- D.R. Congo It can form with calcium

It can form with calcium or sodium and gets its name from the Greek word stilbein ( to shine)

making it perfect for setting in jewelry

is a chatoyant variety of quartz that gets its silky appearance from its parallel growth of quartz crystals

Although it is just a high-quality quartz point

Crystals often form in globular aggregates as seen in this specimen

Dioptase & Quartz on Calcite- D.R. Congo It can form with calciumDioptase is known for being a mesmerizing mineral. Something about its deep emerald green color just grabs everyone's attention. This specimen contains a couple of smaller quartz crystals scattered around, as well as a base of calcite that turns orange under ultraviolet light! Size: 1. 6 x 1. 0 x 0. 7 in. Weight: 0. 8 oz Dioptase is a fragile, copper based mineral that has been used for almost 9000 years. It got its name from the greek words "dia",