The Mammoth Tusk Jewelry Diaries
When opal shaped, silica gel stuffed crevices in rock. As drinking water evaporates, the silica is deposited in the form of small spheres.Hematite is iron oxide that is usually blackish-gray. When really polished it could occasionally appear like silver. Hematite is often a remarkably dense materials.One of the more functional of gems, tourmaline i