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The Rare Gemstone Ammolite. This dazzling iridescent fossil of an 80 million

The Rare Gemstone Ammolite. This dazzling iridescent fossil of an 80 million year old ammonite measuring 2 feet in diameter was discovered near Alberta, Canada and is a particularly rare example of an ancient sea creature that went extinct at the same time as most dinosaurs. The spectacular coloration is the result of millions of years of high temperatures and pressures, creating a gemstone known as ammolite.Ammonite, opalised, 254nm fluorescence, photograph by The Bob.H S Moreau

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