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Agate — specimen 0620, photo © NMNHS
Agate — specimen 0620, photo © NMNHS

Agate — specimen 0620

Origin

North America
USA, Montana, Yellowstone River
Agate — specimen 0620, locality map
Data

Weight: 3.78 ct; size: 13.85 | 10.01 | 3.27 mm; shape: oval; colour: medium dark red; very slightly brownish; clarity: translucent; cut: very good; treatment: none.
Notes

Clean specimen; very good cabochon style cut.

Other specimens
Agate — specimen 0619Agate — specimen 0119Agate — specimen 0124Agate — specimen 0382Agate — specimen 0371Agate — specimen 0372Agate — specimen 0392Agate — specimen 0393Agate — specimen 0324Agate — specimen 0325Agate — specimen 0611Agate — specimen 0258Agate — specimen 0419Agate — specimen 0111Agate — specimen 0112Agate — specimen 0250Agate — specimen 0321Agate — specimen 0322

More specimens

More information from ‘Classification’

Agate

A variety of chalcedony with layered structure.


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