21.80 ct Square Cushion Blue Sapphire, GIA, Ceylon Unheated

21.80 ct Blue Sapphire, square cushion cut, from Ceylon. Unheated: the colour is as the stone formed, with no heat treatment. Sri Lanka (Ceylon) is known for bright, lively sapphires across the colour range, including padparadscha. GIA report 2201206970. Measurements: 15.56 × 15.26 × 8.27 mm. Our grading: fine quality cornflower blue. Stock number CS-0158. 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.

Cornflower blue, in its colour grade, is a bright, softer mid-blue, the colour long associated with Kashmir and Ceylon. It is documented by GIA, the Gemological Institute of America. Face-up it is almost exactly square. A collector’s size, suited to a signature ring, pendant or a stone kept loose.

More like this: Cornflower Blue Sapphires · Blue Sapphires · Ceylon 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