Benz Calcite Opal copper has been used by

copper has been used by humans as ornamentation

sometimes in the same formations

Each contains at least one (most several) clearly visible insect

Malachite has been mined for both use in copper tools and for ornamentation and jewelry

Amethyst is a form of Quartz which gets its beautiful purple tint from the substitution of silicone for iron due to irradiation

Benz Calcite Opal copper has been used byA relatively new and exciting addition to the mineral world, the so called Benz calcite comes from specific formations in Hubei, China, where some truly impressive specimens like this very rarely emerge from the mines. These incredible collectors pieces each one of a kind feature massive semitransparent calcite crystals, many of which feature coatings of fine, incredibly brilliant pyrite and chalcopyrite. The Benz part of the name comes from the tip