Quartz Crystals on Calcite - San Antonio Mine, Chihuahua, Mexico
Small delicate crystals of bright green fluorescing quartz are peppered around a matrix of calcite on this striking specimen.
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Rogerley Fluorite - England
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SKU: MSJ0409
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Rogerley fluorite is a famous type of fluorite from the Rogerley Mine in County Durham, England. These pieces set the bar for other fluorites on the market, they are simply some of the nicest out there. Under visible light, a nice specimen will contain gemmy emerald green fluorite crystal cubes.
Their fluorescence is so intense and bright, that even when exposed to sunlight, the UV from the sunlight will cause a noticeable color change to blue in the green fluorite crystals. We call this phenomenon, Daylight Fluorescence. It’s very cool to see in person.
"Red" Sodalite (Hackmanite) - Deeply Tenebrescent Greenland Mineral
Red sodalite is named for the color it takes on when exposed to sunlight; it is nicely tenebrescent under longwave UV. Under shortwave UV the color deepens, in seconds, to almost black in some areas.
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A Short Study on Rare Occurrences of Apatite from the Ilimaussaq Complex, Greenland
Rarest of the rare from Greenland - apatite has only been observed in a handful of pieces over the decade+ we have been exploring Greenland. Blue apatite crystals fluorescing under UV.
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