Ruby 2mm Faceted Round AA Grade - 15-16 Inch Green Flower one of the first fluorescent

one of the first fluorescent minerals ever studied

It occurs in bright turquoise blues and darker blues as well as rust reds

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It was named from the Latin "Thule" - which was a term used by ancient Greeks and Romans to refer to the then-little-known lands to the north or present day Scandinavia

It is often thought of as an all to black stone

Ruby 2mm Faceted Round AA Grade - 15-16 Inch Green Flower one of the first fluorescentRuby is a precious gemstone known for its deep red color. It is a variety of the mineral corundum, the second hardest mineral next to diamond . The presence of chromium is what gives a ruby its red color. Trace amounts of iron can also affect the hue, giving some rubies a slightly brownish or purplish tint. Ruby has long been considered one of the most beautiful and valuable gemstones on the planet. At times in ancient history, Ruby was valued more