16.05 ct Oval Blue Sapphire, GIA, Unheated

16.05 ct Blue Sapphire, oval cut. Unheated: the colour is as the stone formed, with no heat treatment. GIA report 2171240829. Measurements: 16.01 × 12.45 × 10.10 mm. Our grading: fine quality vivid blue. Stock number CS-0156. 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.

“Vivid” in its colour grade marks the most saturated level of colour. It is documented by GIA, the Gemological Institute of America. Its length-to-width ratio is 1.29. A collector’s size, suited to a signature ring, pendant or a stone kept loose.

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