The Definitive Guide to Natural gemstone Jewelry
Ruby is definitely the crimson range of corundum, the 2nd hardest material to the Mohs scale, with a ranking of 9. It can be The mixture of hardness and prosperous shade which makes fine ruby so useful.Charoite is a completely new gem in the marketplace, first appearing in 1978. It truly is uncovered only in a single spot in Siberia, Russia. The sw