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Ruby — specimen 0629, photo © NMNHS
Ruby — specimen 0629, photo © NMNHS

Rubyspecimen 0629


East Africa
Tanzania, Ruvuma, Songea
Ruby — specimen 0629, locality map

Weight: 0.12 ct; size: 3.11 | 2.75 | 1.80 mm; shape: hexagon; colour: medium dark strongly purplish red; very slightly brownish; clarity: eye clean; cut: excellent; treatment: heating.

Very clean specimen; design ‘Hexamixtum S 41-32’, excellent cut by Tan Pen.

Other specimens
Ruby — specimen 0147Ruby — specimen 0318Ruby — specimen 0276Ruby — specimen 0654

More information from ‘Classification’

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