Emerald — specimen 0354, photo © NMNHS
Afghanistan, Panjshir, Panjshir Valley
Weight: 0.15 ct; size: 3.68 | 3.61 | 2.29 mm; shape: round; colour: light very slightly bluish green; very slightly greyish; clarity: eye clean; cut: very good; treatment: none.
Lightly coloured, very clean specimen; very good brilliant style cut. Source: Grey Weaver, Custom Facetor LLC
More information from ‘Classification’
A green variety of the beryl; coloured by chromium or/and vanadium.