1.37 ct Natural Bi-color Padparadscha Orange Blue Sapphire - Unheated Untreated Sapphire - Unisex Engagement Ring Size 7.5

Sapphire (Wikipedia, the free encyclopedia) Sapphire (Greek: σάπφειρος; sappheiros, 'blue stone', which probably referred instead at the time to lapis lazuli) is a gemstone variety of the mineral corundum, an aluminium oxide (α-Al2O3). Trace amounts of other elements such as iron, titanium, chromium, copper, or magnesium can give corundum blue, yellow, purple, orange, or a greenish color. Chromium impurities in corundum yield a pink or red tint, the latter being called a ruby. Padparadscha...