Agate — specimen 0419, photo © NMNHS
no precise locality [Africa]
Weight: 0.38 ct; size: 4.68 | 4.67 | 3.21 mm; shape: octagon; colour: medium light very slightly bluish green; slightly greyish; clarity: translucent; cut: excellent; treatment: none.
Clean specimen; design ‘Eight’ by Glenn & Martha Vargas, excellent cut by Tan Pen.
More information from ‘Classification’
A variety of chalcedony with layered structure.