Agate — specimen 0324, photo © NMNHS
USA, Montana, Yellowstone River
Weight: 3.95 ct; size: 14.42 | 10.16 | 3.15 mm; shape: oval; colour: medium dark orange; strong; 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.