A standard
of AIDI

Price a lab-grown diamond. With the proof behind the brand.

The stone at today's market, plus what the brand's sustainability record supports.

gdcs.ai / valuerules v3 · frozen
Shape
1.00 ct
Colour
Clarity
Cut
01 · The stone at market—
02 · Proof—
03 · GDCS value—

Lab-grown · loose · GIA or IGI graded · prices 2026-10-02 · index 2026-09 · sha e84312ce

A price has three parts.

The stone. Set by the market.
Proof. Checked by others.
The name. Fine to charge for. Just not proof.

GDCS values the first two. 500 brands, updated monthly. How it is calculated.

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