Vlasovite — specimen 0006, photo © NMNHS

Vlasovite — specimen 0006

Origin

North America

Canada, Quebec, Sheffield Lake

Data

Weight: 0.22 ct; size: 4.29 | 4.20 | 2.22 mm; shape: cushion triangle; colour: light orangey yellow; strong; clarity: eye clean; cut: very good; treatment: none.

Notes

Very clean specimen; very good brilliant style cut. The specimen is from the series mentioned by Overlin, 2012. Source: John Bradshaw, Coast to Coast Rare Stones International.

More information from ‘Classification’

Vlasovite

A late phase in nepheline syenites, syenitic pegmatites, and along the contact zone of a differentiated alkalic massif (Lovozero Massif, Russia) (Anthony et al., 2001—2005). Faceted specimens are extremely rare.