Happy birthday to all you July babies! Your birthstone, the ruby, is among the most highly prized of gemstones.
The ruby, birthstone for July, is among the most highly prized of gemstones. Large rubies are harder to find than large diamonds, emeralds, and sapphires. As a result, rubies’ value increases with size more than any other gemstone.
Along with its close relative, the sapphire, the ruby is a form of the mineral corundum, which is normally drab and grey in color. Red gemstone corundum is called ruby. All other gemstone corundum colors – orange, yellow, brown, green, blue, purple, violet, black, and colorless – are called sapphires.
The Mogok valley of Upper Burma is famous as the source for the finest and rarest rubies of all, known as “pigeon’s blood” for the stones’ intense red color. Another major source of rubies is Thailand, well-known for dark, brownish-red rubies. Both Thailand and…
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