Gemmology
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Chromian pyrope — specimen 0657, photo © NMNHS
Chromian pyrope — specimen 0657, photo © NMNHS

Chromian pyropespecimen 0657

Origin

North America
USA, Arizona, Apache County, Navajo Indian Reservation
Chromian pyrope — specimen 0657, locality map
Data

Weight: 0.14 ct; size: 2.78 | 2.76 | 1.84 mm; shape: octagon; colour: medium red; very slightly brownish; clarity: eye clean; cut: excellent; treatment: none.
Notes

Very clean specimen; design ‘Octangulum Quardum’, excellent cut by Tan Pen.

Other specimens
Chromian pyrope — specimen 0289

More information from ‘Classification’


A chrome-rich variety of pyrope. Also called ‘anthill garnet’. In the State of Arizona, USA, these are found around the anthills. The ants meet the garnets while digging their underground passages, drag them to the surface and discard them.