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Carat Brief

Track the colored gemstone market before you buy.

Every Tuesday, get 5 market signals on colored gemstones: price movements, auction records, origin trends, treatment risks, and certification issues.

Free every Tuesday. No spam. Unsubscribe anytime.

WHAT YOU GET EVERY TUESDAY

A sharper read on the colored gemstone market

Auction records

The latest sale prices and standout lots from major houses.

Origin trends

Which sources and regions are moving the market this week.

Treatment risk alerts

Know what's being enhanced before you commit to a purchase.

Certification issues

Lab disputes and grading news that affect resale value.

Latest editions

The Quiet Ends. Nine Days From Now.

Sep 8, 2026

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5 min read

The Quiet Ends. Nine Days From Now.

Sotheby's Hong Kong, September 17 — the autumn curtain-raiser

The Sapphire That Isn't Blue.

Sep 1, 2026

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4 min read

The Sapphire That Isn't Blue.

The 5-minute weekly intelligence on the colored stone market. · September 1, 2026

Carat Brief
Carat Brief
Rarer Than Emerald. Cheaper Too.

Aug 25, 2026

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4 min read

Rarer Than Emerald. Cheaper Too.

The 5-minute weekly intelligence on the colored stone market. · August 25, 2026

Carat Brief
Carat Brief

Carat Brief

Weekly market notes on colored gemstones: auction records, origin trends, treatment risks, certification issues, and public pricing signals.

© 2026 Carat Brief.
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