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Sapphirine
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Sapphirine — specimen 0581, photo © NMNHS
Sapphirine
—
specimen 0581
Origin
South Asia
Sri Lanka
Data
Weight:
0.06 ct;
size:
2.21 | 2.14 | 1.58 mm;
shape:
octagon;
colour:
medium dark very strongly greenish blue; very slightly greyish;
clarity:
slightly included;
cut:
very good;
treatment:
none.
Notes
Slightly included specimen; design ‘Eight’ by Glenn & Martha Vargas, excellent cut by Tan Pen.
Other specimens
More information from ‘Classification’
Sapphirine
In high-temperature
metamorphic rocks
or
xenoliths
with abundant aluminium and magnesium and low silicon; may occur as a primary magmatic mineral in subsilicic rocks (
Anthony et al., 2001—2005
). Very rare as faceted specimens.
Gemmology — gemstones
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