3.31 ct Round Blue Sapphire, GRS, Thailand

3.31 ct Blue Sapphire, round cut, from Thailand. Unheated: the colour is as the stone formed, with no heat treatment. GRS report GRS2021-094524 (11 Dec 2021); AGL# 809061. Measurements: 8.33 × 8.19 × 5.22 mm. Our grading: fine quality royal blue. Stock number CS-0227. Approved trade buyers can sign in on this page for pricing, or WhatsApp or email us about this stone. Viewings by appointment in Toronto, Hong Kong, Bangkok and Dubai.

Royal blue, in its colour grade, describes a deep, rich, velvety blue, among the most valued sapphire colours. Its laboratory report is from GRS (GemResearch Swisslab), a Swiss laboratory widely used for coloured stones. Large enough to anchor a statement ring or pendant.

More like this: Royal Blue Sapphires · Blue Sapphires · Unheated Sapphires · Stone search

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Further reading: Reading a GRS Report: Pigeon's Blood, Royal Blue, Vivid and the Comments Line · Heated vs Unheated Sapphire: What the Difference Means for Price