Gemmology
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Pleonaste — specimen 0385, photo © NMNHS
Pleonaste — specimen 0385, photo © NMNHS

Pleonastespecimen 0385

Origin

East Asia
China
Pleonaste — specimen 0385, locality map
Data

Weight: 0.14 ct; size: 2.97 | 2.96 | 2.08 mm; shape: round; colour: black; clarity: opaque; cut: good; treatment: none.
Notes

Small opaque specimen; good brilliant style cut. Source: David Weinberg, Multicolour Gems Ltd.

Other specimens
Pleonaste — specimen 0384Pleonaste — specimen 0463Pleonaste — specimen 0442Pleonaste — specimen 0648Pleonaste — specimen 0650Pleonaste — specimen 0666Pleonaste — specimen 0670Pleonaste — specimen 0665Pleonaste — specimen 0671Pleonaste — specimen 0672Pleonaste — specimen 0673

More information from ‘Classification’


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