Opal from Kopasz Hill andesite quarry, Borsod-Abaúj-Zemplén County, Hungary - image 1
Opal from Kopasz Hill andesite quarry, Borsod-Abaúj-Zemplén County, Hungary - image 2

Opal from Kopasz Hill andesite quarry, Borsod-Abaúj-Zemplén County, Hungary

Amazing Opal (var. Hyalite) on andesite matrix. The transparent opal forms a perfect cup and performs intensive neon green fluorescence under short wave ultraviolet light (ex-G-minerals specimen)

Product details

SpeciesOpal
SizeSmall Cabinet
Dimensions5.2 x 3.0 x 2.7 cm
Added on06/04/2025
Current owner
Member since 2025

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Opal
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.
Opal
Regional guide
Opal from Kopasz Hill andesite quarry
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Locality guide
Kopasz Hill andesite quarry
A collector's guide to Kopasz Hill andesite quarry, Hungary: its geology, mining history and notable minerals, illustrated with the 93 specimens documented from this locality on EarthWonders.