It is often found mixed with malachite, azurite, turquoise or quartz. Gem silica can occur with malachite, translucence, pockets of quartz, and an absolutely stunning color It can be found in Cornwall, Pennsylvania, Zaire, Arizona, and other areas. However, chrysocolla is quite a soft mineral, rating about 2 to 4 on the Mohs hardness scale. Gem silica is typically botryoidal (appearing to have bubbles) and harder than chrysocolla. By chemical composition, chrysocolla is hydrous copper silicate and the copper lends it a distinctive greenish blue color that is similar to turquoise. The fibrous varieties are known under the general name of chalcedony, while the granular varieties are known as jasper.Ĭhrysocolla is one of the lesser known gemstones, but is notable because it is one of the few gemstones that contains copper. This kind of quartz has fibrous and granular subcategories. Yet many varieties of quartz are cryptocrystalline they have microscopically (or submicroscopically) small crystals and are usually translucent to opaque, with a waxy, greasy or dull luster.
When most people think of quartz, they think of macrocrystalline quartz, which includes amethyst, citrine, ametrine and smoky quartz. Also known as gem chrysocolla, it is actually a member of the chalcedony family and not, strictly speaking, a variety of chrysocolla at all.Ĭhalcedony is a type of aggregate quartz.
Whether you are looking for a fancy cut, cabochon or any other shape, give us a call and consult our inventory. Gem silica is the tradename for a rare gemstone with a vivid greenish-blue hue. Let our Master Gem Cutters maximize the design, color and brilliance of your gemstones.
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