Graff Authentication

Graff Authentication Service

Professional authentication for Graff diamonds and high jewelry. Setting craftsmanship, hallmark engraving, stone certification cross-checks, and provenance review — all verified by specialists.

99.3%

Accuracy Rate

282+

Brands Covered

100K+

Happy Clients

2–24h

Turnaround

Graff Authentication Guides

1 guide — updated regularly by our experts

Jul 18, 2026·9 min read

Graff Real vs Fake: How to Authenticate High Jewelry & Diamonds

Graff sells among the highest price points in fine jewelry, built almost entirely on exceptional diamonds and gemstones. This guide covers certification, setting craftsmanship, and hallmark checks for authenticating Graff pieces before a high-value purchase.

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Not Sure If Your Graff Is Authentic?

Skip the guesswork. Our certified experts provide fast, reliable authentication with a written verdict — typically in 2–24 hours. Trusted by 100,000+ collectors worldwide.

Authenticate My Graff How It Works

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