Calcite (fluorescent) on basalt

No, this is not cuprite! - EarthWonders Newsletter #7

specimen
HEF22-19
Calcite (fluorescent) on basalt
$1,200.00
SpeciesSizeShips from
CalciteSmallUSA
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Comments
Details
ColorsGrey
Origin
Irai, Rio Grande do Sul, Brazil
SizeSmall
Dimensions6.4 x 6.4 x 2.4 cm
Species
Description
Irai is known for its superb and very distinctive Calcite specimens, often found associated with amethyst in the basalt cavities there. Often scalenohedral and translucent, this small-cabinet piece is totally different than the usual and takes these Calcites to an entirely different level. Not only are the Calcites gemmy and lustrous, their habit is so unusual for the locality, and Calcites in general. In cross-section, they range from highly modified hexagonal to virtually triangular, each more modified than the next. It's really amazing as you compare one to the other. They have flat terminations, and the longest crystal is 4 cm. Not to be outdone, the smaller Calcites are, indeed, scalenodrons, and some are doubly terminated. The Calcites have red fluorescence, and the aesthetics are especially good with the Calcites beautifully set against the dark matrix.
Known provenanceKnowing where your specimen comes from and who owned it adds to its story and value. Good provenance helps prove it's authentic and preserves important details about its discovery.
Richardson, Texas, USA

Unknown previous owners

Earth