Round 1.51ct Natural Navy Blue Sapphire Gemstone

Updated August 6, 2026

This 1.51-carat Navy Blue Round Sapphire, measuring 6.56 x 6.53 x 4.48mm, displays a deep, opaque luster that emphasizes its rich color. Graded as Very Slightly Included, this gemstone features minor internal characteristics that are generally visible only under 10x magnification. It has undergone heat treatment, a standard enhancement that improves color, refines clarity, and enhances overall appearance by minimizing tiny inclusions. Keywords: Faceted, Cabochon, Precious, SemiPrecious, Polished, Rough, Sparkling, Cut, Calibrated.

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