Fluorite (twinned) with Hyalite Opal
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The ArkenstoneFeatured
A gemmy and attractive flattened, twinned Fluorite crystal on matrix from the pegmatites of the Erongo region. This Fluorite is transparent to translucent with an overall delicate pale blue color with patches of purple on the broad faces with luster ranging from glassy to silky. The crystal has distinct Spinel Law twinning with the twin plane parallel to the two broad, bounding faces. The Fluorite is perched nicely on a nest of earlier formed, small (less than 4 mm) green Fluorite crystals and is associated with a few Quartz crystals to 1.5 cm, and a colorless formation at the tip of the Fluorite turns out to be Hyalite Opal, which glows neon green under ultraviolet light. The matrix is granular, off-white Albite. Unusually well displayed, this matrix twin is rare amidst many that are loose singles.
Product details
SizeSmall Cabinet
Dimensions5.3 x 5.3 x 4.0 cm
Listed on12/05/2025
LocalityNamibia, Erongo Region, Erongo Mountains
SKUSM23-46
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Mineral guide
Learn about Opal
amorphous silica with water and a spectacular play-of-color; black, boulder, and fire opal varieties capture brightness, color, and collecting appeal.Regional guide
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