Every stone.
Every detail.
Documented.
Our GIA-trained gemologists evaluate each piece with laboratory-grade instruments — measuring, grading, and certifying every stone to the highest standard.
Specialized expertise.
Comprehensive coverage.
From single stones to entire collections, AGA provides the documentation you need for insurance, estate planning, and resale.
Three steps to a certified appraisal.
Submit your piece today — receive a professionally printed certificate within days.
A document your
customers keep forever.
Every AGA certificate carries a unique report number, full gemological grading data, and a QR code customers can scan to verify authenticity instantly.
AGA TrustCode™
Protected.
Every AGA certificate is assigned a unique TrustCode — a QR-linked digital record that is tamper-evident, permanently stored, and publicly verifiable in seconds. No fakes can replicate it.
Pay only for what you certify.
No subscriptions. No monthly fees. One price, one certificate.
Frequently Asked Questions
Submit your piece.
We'll handle the rest.
Individual customers can request a professional appraisal directly — no store account needed. Our GIA-trained gemologists will contact you within 24 hours.
Your store deserves
certified confidence.
Join jewelry stores across New York trusting AGA for professional appraisal certificates. No subscription — pay only per certificate.