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Gemstones

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Blue amber beads from the Dominican Republic
Colour Phenomena of Blue Amber

Investigates the presence of fluorescence, rather than iridescence, as the cause of colour in blue amber from the Dominican Republic and Indonesia.

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Green Amber
Characterisation of “Green Amber” With Infrared and Nuclear Magnetic Resonance Spectroscopy

A peridot-like bright greenish yellow to green gem material called “green amber” has recently appeared in the gem market.

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