Herderite — specimen 0201, photo © NMNHS

Herderite — specimen 0201

Origin

South America

Brazil

Data

Weight: 1.49 ct; size: 8.38 | 5.89 | 4.42 mm; shape: oval; colour: medium light yellowish green; very slightly greyish; clarity: eye clean; cut: fair; treatment: none.

Notes

Very clean specimen; mixed style cut.

More information from ‘Classification’

Herderite

Late stage hydrothermal mineral in granite pegmatites (Arem, 1987: 111). Faceted specimens are very rare.