6.43 ct Square Emerald, GRS, Colombia Minor

6.43 ct Emerald, square cut, from Colombia. Treatment: Minor. Clarity enhancement graded minor, a level widely accepted for fine emerald. Colombia is the classic source of fine emerald, valued for its pure, slightly bluish green. GRS report GRS2026-070525. Measurements: 10.71 × 10.20 × 6.85 mm. Our grading: fine quality green. Stock number CS-1303. 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.

Its laboratory report is from GRS (GemResearch Swisslab), a Swiss laboratory widely used for coloured stones. Its length-to-width ratio is 1.05, close to square. Large enough to anchor a statement ring or pendant.

More like this: Colombian Emeralds · Loose Emeralds · Stone search

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Further reading: Reading a GRS Report: Pigeon's Blood, Royal Blue, Vivid and the Comments Line · Rubies, Sapphires and Emeralds: Origin, Treatment and Value