Mon, 20 Mar 2017 22:15:09 +0000

The spinel from Sri Lanka is exceptional for its intense violet-blue color, unlike any in the National Gem Collection

The 14.02-carat Spinel from Sri Lanka is exceptional for its intense violet-blue color. Spinel is a magnesium aluminum oxide and forms when impure limestone is altered by heat and pressure. They are commonly found in occurrence with corundum (ruby and sapphire) and have historically been confused with each other due to their many similarities. Both minerals are hard, yield durable gems, and form in a range of colors.The major sources of spinel gemstones are Burma, Sri Lanka, and Thailand.

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