The Turquoise Standard
A Shared Way to Talk About Turquoise Rarity
The 2026 edition gives the turquoise field a common grading language for the relative rarity of natural formation in natural turquoise cabochons.
The Big Idea
Turquoise knowledge already has deep roots in mine history, collector taste, lapidary skill, and trade experience. The Turquoise Standard does not replace that knowledge. It adds a repeatable method: direct comparison to authorized Master Stones so rarity can be interpreted and communicated consistently.
Why People Are Talking About It
Rarity Gets Its Own Language
The grade is about rarity of natural formation, not beauty, market value, mine reputation, or personal preference.
The References Are Physical
Master Stones do not define rarity; they represent it. Official grading depends on direct comparison to the authorized reference collection.
The Result Is Recorded
Reports connect the official grade, specimen information, photograph, serial number, and registry record. The grading fee is $120 per stone when submissions are accepted.
What It Does Not Change
Provenance Still Matters
A grade does not certify provenance, source or origin, chain of custody, or collector history.
Taste Still Matters
Color Master Stones represent rarity rather than preference. The Standard does not tell the marketplace what it should like.
Value Still Has Its Own Factors
A grading report is not an appraisal and does not establish price, ownership, or future market performance.