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Dravite
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Dravite — specimen 0495, photo © NMNHS
Dravite
—
specimen 0495
Origin
East Africa
Tanzania
Data
Weight:
0.23 ct;
size:
3.83 | 3.81 | 2.58 mm;
shape:
octagon;
colour:
medium orange; very slightly brownish;
clarity:
eye clean;
cut:
excellent;
treatment:
none.
Notes
Very clean specimen; design ‘Eight’ by Glenn & Martha Vargas, excellent cut by Tan Pen.
Other specimens
More information from ‘Classification’
Dravite
Commonly in metamorphosed
limestones
or
mafic
igneous rocks
; rarely in
pegmatites
; in
sedimentary rocks
(
Anthony et al., 2001—2005
).
Gemmology — gemstones
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