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Ruby Price Per Carat: $564 at Gemfields' October Auction

Oct 20, 2026

The 5-minute weekly intelligence on the colored stone market. · October 20, 2026

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Emerald Price Per Carat: $146 vs $9.72 at Gemfields

Oct 13, 2026

The 5-minute weekly intelligence on the colored stone market. · October 13, 2026

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The Warning Was Smaller Than The Bill.

Oct 6, 2026

The 5-minute weekly intelligence on the colored stone market. · October 6, 2026

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The Grade Problem Got A Price Tag.

Sep 29, 2026

Gemfields warns of a $73.5M H1 loss on a $125.2M Montepuez ruby impairment.

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The Season Opened Strong. Spinel Held Its Line.

Sep 24, 2026

Sotheby's Hong Kong results, a correction, and what "within estimate" really means

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Untreated Isn't A Preference. It's A Price.

Sep 15, 2026

A cross-cutting look at treatment premiums across all 8 index stones

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The Quiet Ends. Nine Days From Now.

Sep 8, 2026

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

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The Sapphire That Isn't Blue.

Sep 1, 2026

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

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Rarer Than Emerald. Cheaper Too.

Aug 25, 2026

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

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What Is Alexandrite?

Aug 20, 2026

The color-change gem that defies category.

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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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