American Gemological Laboratories

What American Gemological Laboratories does

American Gemological Laboratories (AGL) is a New York-based gemological testing laboratory founded in 1977 by C.R. "Cap" Beesley, specializing exclusively in colored gemstone certification. It was the first U.S. laboratory to provide combined quality grading and country-of-origin determinations for colored stones, and its proprietary reporting frameworks — including the Total Quality Integration Rating (TQIR), AGL Classic designation, and tiered Prestige Report / GemBrief / JewelFolio documentation — are recognized standards within the colored gem trade.

AGL's core technology combines microscopy with multiple spectroscopic techniques (UV/Vis/NIR, mid-infrared, Raman) and semi-quantitative chemical analyses to identify gemstones, detect enhancements, determine geographic origin, and assess rarity. Expert gemologists, led by President and Chief Gemologist Christopher P. Smith (FGA), compare findings against proprietary reference samples and published gemological literature to issue opinions. Services range from a $40 GemBrief credit-card-sized disclosure report to premium JewelFolio bound-book documentation for exceptional pieces, with country-of-origin determination available as an add-on.

The business operates on a unit-pricing, pay-as-you-go model with no subscription or recurring contracts. Clients submit gemstones either directly to AGL's 580 Fifth Avenue headquarters or via shipping, and the lab extends its reach through on-site testing at major international trade shows in Tucson, Las Vegas, Hong Kong, Bangkok, Colombo, and Kuwait. Marquee customers include Christie's and Sotheby's for high-profile auction pieces, alongside a broad trade base of retailers, wholesalers, manufacturers, and private collectors. In February 2026, AGL was acquired by Blackstone-backed International Gemological Institute (IGI) for $13.2 million, with the lab continuing to operate independently under its existing brand and leadership.

Name

American Gemological Laboratories

Legal name

American Gemological Laboratories LLC

Website

https://aglgemlab.com

Company type

Private

Founded year

1977

Operating status

Operating

Headcount range

11–50 employees

Short description

American Gemological Laboratories is a New York-based gemological lab founded in 1977 that provides identification, enhancement disclosure, country-of-origin determination, and quality grading services for colored gemstones, serving auction houses, retailers, wholesalers, and private collectors through per-report certification products.

Ownership category

akta.pro rank

Headquarters

HQ city

New York

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Infrastructure, Marketing or Sales

Revenue model

1. Gem Testing and Certification Services: One-time fees charged for gemological testing, identification, enhancement detection, and certification services. Services range from basic GemBrief reports to premium JewelFolio documentation, with pricing based on report type and testing complexity.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

American Gemological Laboratories provides independent gemological testing and certification services exclusively for colored gemstones. Its services include identification, enhancement/treatment detection and disclosure, country-of-origin determination, and quality grading analysis delivered through tiered report formats (GemBrief™, Prestige Report™, JewelFolio™, Appendix Letter) and the AGL Classic™ quality-and-origin designation. The lab serves gemstone and jewelry trade professionals, auction houses, luxury collectors, and retailers who require scientifically rigorous, third-party verification of colored stone identity, treatment status, geographic origin, and quality.

Product overview

American Gemological Laboratories (AGL) offers a tiered certification service portfolio centered on its Prestige Report™ platform with multiple levels of analysis (Identification & Enhancement, Origin, Full Grading). The product line includes GemBrief™ as a lower-cost credit card-sized alternative, and premium add-ons such as JewelFolio™ (detailed bound book) and Appendix Letter (expanded documentation for rare stones). AGL provides specialized origin determination services using gemological testing methodologies and offers the AGL Classic™ designation for top-quality stones from distinguished sources.

Differentiator

Problem solved

Functional benefit

Brands

• Prestige Report™: Full-page laminated report providing identification, enhancement disclosure, and optional country-of-origin determination and full grading analysis for colored gemstones.
• GemBrief™
• JewelFolio™
• AGL Classic™
• Appendix Letter

Products and services

• The Prestige Report™ AGL's staple full-page laminated report providing identification and enhancement disclosure for colored gemstones, available at multiple levels including basic identification, origin reporting, and full grading analysis.
• The Prestige Report™ with Grading Extended Prestige Report that adds comprehensive color grading, clarity assessment, cut evaluation, and Total Quality Integration Rating (TQIR) to the base identification and enhancement report.
• GemBrief™ Credit card-sized report format providing simplified identification and enhancement disclosure as a low-cost alternative to the Prestige Report, exceeding FTC requirements for proper disclosure.
• JewelFolio™ Premium 36-48 page bound book with protective slipcase showcasing one-of-a-kind gemstones and jewelry items, featuring detailed analysis, high-resolution photography, and comprehensive documentation including history, geology, and origin information.
• Appendix Letter Exclusive additional service at the discretion of the head gemologist for gems meeting rarity criteria, providing expanded detail on origin, color trade terms, and specific mine information presented in a custom embossed folder.
• Origin Determinations Expert opinion-based geographic origin determination service using microscopy, UV/Vis/NIR spectroscopy, mid-infrared spectroscopy, Raman spectroscopy, and semi-quantitative chemical analyses compared against known reference samples and published gemological literature.

Quantifiable outcome

• First US laboratory to provide combined quality grading and country-of-origin for colored stones

Named customers4 records

Segments2 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

One partnership is on record.

• GemResearch Swisslab (GRS)minorStrategic or Co-development Partner · 29 September 2011GRS and AGL collaborated to harmonize the description of lead-glass treated rubies on their respective gemological reports. Both laboratories agreed that such treated material needed clear distinction from traditionally heated rubies to avoid consumer confusion. AGL pioneered the term 'Composite Ruby' while GRS used 'Hybrid Ruby' for the same product.

Scale indicators4 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Gübelin Gem Lab: Swiss-based gemological laboratory specializing in colored gemstone identification, origin determination, and treatment detection. Direct peer to AGL with comparable services for high-end colored stones and similar luxury auction house relationships.
• SSEF Swiss Gemmological Institute: Swiss gemological institute focused on colored stone certification including origin determination and treatment disclosure. Directly comparable to AGL in services, customer base (auction houses, collectors), and scientific methodology.
• GemResearch Swisslab (GRS): Swiss-based colored gemstone research laboratory known for origin determination and treatment disclosure. Already a documented collaboration partner of AGL on lead-glass treated ruby terminology harmonization.
• Lotus Gemology: Hong Kong and Bangkok-based gemological laboratory specializing in colored stone origin determination and treatment disclosure. Directly comparable niche competitor focused on ruby, sapphire, and spinel.
• ICA GemLab: Gemological laboratory operated by the International Colored Gemstone Association, providing identification and certification services for colored gemstones globally. Comparable service offering and customer base to AGL.
• DSEF German Gem Lab: German gemological laboratory focused on colored gemstone identification, origin determination, and grading. A historical European peer providing similar colored stone certification services.

Broad incumbents

• GIA (Gemological Institute of America): The world's largest and most established gemological laboratory, with broad services across both diamonds and colored stones. While AGL focuses on colored stones, GIA is the dominant incumbent whose reports are the industry standard globally.
• International Gemological Institute (IGI): Global gemological certification organization with 35 laboratories in 10 countries, now AGL's parent company. IGI provides similar gemological services at greater scale across both diamonds and colored stones.
• HRD Antwerp: European gemological institute primarily focused on diamond certification with growing colored stone services. Broad incumbent in the gemological laboratory space with overlapping technology and customer base.

Others

• Gem-A (Gemmological Association of Great Britain): UK-based gemological educational body that also conducts research and provides gem testing services. Connected to AGL through Christopher Smith's FGA fellowship and serves overlapping industry interests.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks5 records

Key highlights6 records

Customer concentration

• Instagraminstagram.com/aglgemlab

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about American Gemological Laboratories