Oval Green-Blue Sapphire from Thailand

About Green Sapphire

Green sapphire is the green variety of corundum, the same mineral family as blue sapphire and ruby. Its colour usually comes from iron, with contributions from vanadium or chromium in some stones. Shades range from yellowish and olive green to bluish or greyish green. Many stones show colour zoning, so different areas of one crystal may appear noticeably different. Green sapphire is normally transparent to translucent and may…