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Bytownite
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Bytownite — specimen 0133, photo © NMNHS
Bytownite
—
specimen 0133
Origin
Central America
Mexico
Data
Weight:
2.00 ct;
size:
10.12 | 8.12 | 5.22 mm;
shape:
pear;
colour:
very light yellow;
clarity:
eye clean;
cut:
good;
treatment:
none.
Notes
Very clean specimen; good mixed style cut. Source: Gary Eisenberg, Knoxville, Tennessee.
Other specimens
More information from ‘Classification’
Bytownite
A variety of anorthite; plagioclase feldspar with an albite:anorthite molar ratio ranging from 10:90 to 30:70.
Gemmology — gemstones
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