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Ruby — specimen 0276, photo © NMNHS
Ruby — specimen 0276, photo © NMNHS

Ruby — specimen 0276

Origin

East Africa
Tanzania, Ruvuma, Songea
Ruby — specimen 0276, locality map
Data

Weight: 0.61 ct; size: 6.33 | 4.36 | 2.79 mm; shape: pear; colour: medium dark strongly purplish red; very slightly brownish; clarity: eye clean; cut: good; treatment: heating.
Notes

Very clean specimen; good mixed style cut. Source: David Weinberg, Multicolour Gems Ltd.

Other specimens
Ruby — specimen 0147Ruby — specimen 0318Ruby — specimen 0629Ruby — specimen 0654

More information from ‘Classification’

Ruby

A red, gem variety of corundum. The red colour is caused by minor amounts of trivalent chromium replacing aluminium in the crystal structure.


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