Agate — specimen 0119, photo © NMNHS
USA, Montana, Yellowstone River
Weight: 4.42 ct; size: 13.33 | 13.30 | 3.20 mm; shape: round; 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.