Agate — specimen 0382, photo © NMNHS
USA, Montana, Yellowstone River
Weight: 2.04 ct; size: 10.32 | 8.19 | 2.91 mm; shape: oval; colour: dark reddish orange; clarity: translucent; cut: very good; treatment: none.
Clean specimen; very good cabochon style cut.
More information from ‘Classification’
A variety of chalcedony with layered structure.