A-grade Clear Topaz Rough from Vietnam - Beautiful Gemstone for Jewelry Making SIZE (Picture scale cube=1cm): 5-15mm (Range) All of our Minerals & Crystals are 100% Genuine Specimens & come with a Certificate of Authenticity. Topaz as a Healing Crystal promotes Communication, especially good for writers, or simply to just say 'sorry' Topaz is a silicate mineral of aluminium and fluorine. Topaz crystallizes in the orthorhombic system, and its crystals are mostly prismatic…