3.79 ct Cushion Blue Sapphire, GIA, Madagascar Unheated

3.79 ct Blue Sapphire, cushion cut, from Madagascar. Unheated: the colour is as the stone formed, with no heat treatment. Madagascar is one of the most important modern sources of fine sapphire and ruby. GIA report 5222418411. Measurements: 9.13 × 8.44 × 5.12 mm. Our grading: gem quality royal blue. Stock number CS-0054. The video on this page was filmed in our office, unedited and unfiltered. 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 GIA, the Gemological Institute of America. Its length-to-width ratio is 1.08, close to square. Large enough to anchor a statement ring or pendant.

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

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Further reading: Heated vs Unheated Sapphire: What the Difference Means for Price · Rubies, Sapphires and Emeralds: Origin, Treatment and Value