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What Is Tourmaline?

Aug 20, 2026

Colors, origins, and what makes it unique.

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What Is Spinel?

Aug 20, 2026

Colors, origins, and why collectors are paying attention.

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What Is Emerald?

Aug 20, 2026

Color, origins, and what the market hides.

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Ruby vs. Sapphire

Aug 20, 2026

How to tell them apart, and why price differs by 10x.

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What Is Sapphire?

Aug 20, 2026

Colors, origins, and what the market won't tell you.

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Revenue Rebounded. The Grade Didn't.

Aug 18, 2026

The 5-minute weekly intelligence on the colored stone market. · August 18, 2026

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One Hill on Earth. Nowhere Else.

Aug 11, 2026

The 5-minute weekly intelligence on the colored stone market. · August 11, 2026

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Emerald by Day. Ruby by Night.

Aug 4, 2026

The 5-minute weekly intelligence on the colored stone market. · August 4, 2026

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It Fooled Kings. It Needs No Heat.

Jul 28, 2026

The 5-minute weekly intelligence on the colored stone market. · July 28, 2026

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The Diamond Broke. Color Held.

Jul 21, 2026

The 5-minute weekly intelligence on the colored stone market. · July 21, 2026

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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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