About AGA

Precision in Every
Gemstone.

On West 47th Street, in the heart of the Diamond District. Certified valuations for insurance, resale, estate, and legal use.

Who We Are

AGA is an independent appraisal office on West 47th Street. Jewelers bring us a piece in the morning and hand their customer a QR-verified certificate the same day, written to stand up with insurers, estates, and courts.

GIA
Certified Gemologists
QR
Verified Certificates
Same Day
Certificate Ready
What We Do

Four pillars of our appraisal service.

Gemological Authentication

Every item undergoes a thorough inspection by our GIA-trained gemologists. We evaluate metal composition, hallmark verification, stone identification, carat weight, color and clarity grading, cut assessment, and overall condition, identifying treatments, alterations, and authenticity markers.

Certificate & Documentation

Every AGA appraisal includes a professionally prepared certificate registered in the AGA database and embedded with a unique QR code, allowing insurers, buyers, and owners to instantly verify authenticity, grading data, and appraised value from any device.

Insurance & Legal Use

Reports carry the details insurers look for when scheduling a piece, settling a claim, or setting replacement coverage, and they serve just as well for estate settlements, charitable donations, and legal proceedings. Acceptance is always at each insurer's discretion.

Complete Independence

AGA operates exclusively as an independent appraisal service. We do not purchase, sell, or broker jewelry or gemstones, ensuring complete objectivity in every valuation. All reports are prepared by credentialed gemologists free from any conflict of interest.

Professional Notice

American Gemological Appraisals is an independent appraisal office. Every report is prepared by a credentialed gemologist to accepted industry standards, for insurance, estate, resale, and legal use. We do not purchase, sell, or broker jewelry or gemstones.

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