Sapphire Diamond White Gold Jewellery Necklace.
Sapphire ring made circa 1940
Rubies are corundum which contain chromium impurities that absorb yellow-green light and result in deeper ruby red color with increasing content. Purple sapphires contain trace amounts of van adium and come in a variety of shades. Corundum that contains ~0.01% of titanium is colorless.
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