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Charoite
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Charoite — specimen 0530, photo © NMNHS
Charoite
—
specimen 0530
Origin
North Asia
Russia, Far Eastern District, Sakha Republic, Aldan Shield, Murunskii Massif
Data
Weight:
2.01 ct;
size:
12.20 | 7.26 | 2.70 mm;
shape:
octagon;
colour:
medium dark bluish violet; very slightly greyish;
clarity:
opaque;
cut:
excellent;
treatment:
none.
Notes
Clean specimen; design ‘Octaelongatis Cab’, excellent cut by Tan Pen.
More information from ‘Classification’
Charoite
In potassic feldspar metasomatites at the contact of nepheline and aegirine syenites with limestones (
Anthony et al., 2001—2005
).
Gemmology — gemstones
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