• Frédéric Messier Leroux

Brightly fluorescent opal from Maine

Old-time specimen of brightly fluorescent opal-AN from the Lord Hill Quarry, Stoneham, Oxford County, Maine, recently acquired in a trade. It fluoresces very brightly under shortwave UV (shown in the first picture), and also quite brightly under longwave UV.

Shortwave UV

Longwave UV

Visible light.

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