Congo (Zaire) Primary Malachite forms an intriguing specimen of stalactites of fibrous crystals, with rounded tops. The fibrous texture creates a gorgeous chatoyant lustre, which gives a halo effect to the tops of the stalactite.
Epidote is a silicate mineral, a calcium aluminum iron silicate. It has a hardness of 6 to 7 on the Mohs scale. One of its distinguishing characteristics is strong pleochroism, where crystals display different colors -- green, brown and yellow -- as they