Gemstone Grading — Rubies, Sapphires & Black Diamonds in Luxury Fashion

The ETRNLY Journal — Artisan Stories & Craft Essays

About This Article — ETRNLY's couture jackets feature rubies, sapphires, labradorite, and black diamo

ETRNLY's couture jackets feature rubies, sapphires, labradorite, and black diamonds. Our master artisans explain how gemstones are graded and what ETRNLY's quality standards mean.

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A gemstone's value is determined by four factors: colour, clarity, cut, and carat weight — the 4Cs developed by the Gemological Institute of America. But in fashion jewelry and garment hardware, a fifth factor dominates: setting integrity.

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