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Pleonaste — specimen 0442, photo © NMNHS
Pleonaste — specimen 0442, photo © NMNHS

Pleonaste — specimen 0442

Origin

Southeast Asia
Thailand, Kanchanaburi, Bo Phloi
Pleonaste — specimen 0442, locality map
Data

Weight: 1.29 ct; size: 6.85 | 5.89 | 4.88 mm; shape: hexagon; colour: black; clarity: opaque; cut: excellent; treatment: none.
Notes

Clean specimen; design ‘Hexamixtum S 42-43’, excellent cut by Tan Pen.

Other specimens
Pleonaste — specimen 0384Pleonaste — specimen 0385Pleonaste — specimen 0463Pleonaste — specimen 0648Pleonaste — specimen 0650Pleonaste — specimen 0666Pleonaste — specimen 0670Pleonaste — specimen 0665Pleonaste — specimen 0671Pleonaste — specimen 0672Pleonaste — specimen 0673

More information from ‘Classification’

Pleonaste

An intermediate variety of the hercynite-spinel series, iron-rich spinel or magnesium-rich hercynite. Often called black spinel.


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The specimens illustrated in this site do not exist in the collections of the National Museum of Natural History, Sofia.