10.66 ct Star Oval Blue Sapphire, GIA, Ceylon Unheated

10.66 ct Blue Sapphire, star oval 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 2183631419. Measurements: 10.65 × 10.23 × 9.44 mm. Our grading: displaying fine asterism; fine quality violetish blue. Stock number CS-0349. 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.

Displaying fine asterism. It is documented by GIA, the Gemological Institute of America. Its length-to-width ratio is 1.04, close to square. A collector’s size, suited to a signature ring, pendant or a stone kept loose.

More like this: Blue Sapphires · Star 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