12.53 ct Cushion Blue Sapphire, GRS, Ceylon Unheated

12.53 ct Blue Sapphire, cushion cut, from Ceylon. Treatment: Unheated. GRS report GRS2026-080747 (28 Aug 2026); GIA# 5563356875. Measurements: 13.30 × 10.60 × 8.82 mm. Our grading: gem quality intense to vivid (royal) blue. Stock number CS-0957.

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