Sapphire Gemstone

Sapphire Gemstone. Sapphire, blue stone which probably referred instead at the time to lapis lazuli is a gemstone variety of the mineral Corundum, an Aluminium Oxide. Trace amounts of elements such as iron, titanium, chromium, copper or magnesium can give corundum respectively blue, yellow, purple, orange, or green color. The cost of natural sapphires