4.04 ct Square Radiant Blue Sapphire, LOTUS, Ceylon Unheated

4.04 ct Blue Sapphire, square radiant 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. LOTUS report 1373-4838. Measurements: 9.20 × 8.89 × 5.01 mm. Our grading: fine quality cornflower blue. Stock number CS-0061. 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. Its laboratory report is from Lotus Gemology in Bangkok, a specialist in ruby, sapphire and spinel. Its length-to-width ratio is 1.03, close to square. Large enough to anchor a statement ring or pendant.

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