Gemmology
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Kornerupine — specimen 0436, photo © NMNHS
Kornerupine — specimen 0436, photo © NMNHS

Kornerupinespecimen 0436

Origin

South Asia
Sri Lanka
Kornerupine — specimen 0436, locality map
Data

Weight: 0.66 ct; size: 6.06 | 5.11 | 3.82 mm; shape: oval; colour: dark yellowish green; clarity: eye clean; cut: excellent; treatment: none.
Notes

Very clean specimen; design ‘Ovalimixtum ST’, excellent cut by Tan Pen.

Other specimens
Kornerupine — specimen 0427Kornerupine — specimen 0104Kornerupine — specimen 0453Kornerupine — specimen 0644

More information from ‘Classification’


In boron-rich igneous and sedimentary rocks; in metamorphosed anorthosite complexes (Anthony et al., 2001—2005).