Leaders in New Age Appraisal Services

Accurate Gemological Laboratories Inc. (AGL) is an independent gemological laboratory that offers professional, fair and accurate diamond grading and jewelry appraisals. For nearly a decade, AGL has provided both the jewelry trade and retail consumers with the highest quality of service and reliable assessments. Our dedication to our craft and commitment to integrity is easily what sets us apart and has earned us our distinguished reputation.

Why choose an independent lab like AGL?

As an independent laboratory that does not buy or sell jewelry, we have no vested interest in the item you own or intend to buy. You can always be sure that our trained appraisers will give you a fair and accurate appraisal for your jewelry that is entirely objective. AGL’s appraisers operate under the highest ethical standard and have a reputation for uncompromising integrity and quality.



An AGL jewelry appraisal is a complete evaluation of the condition, quality and value of an item of jewelry. This document includes a description and assessment of the materials, design and craftsmanship of the piece. Our trained and certified professionals evaluate every piece carefully and thoroughly before including their findings in a detailed report and providing an estimated price. Having your jewelry appraised by AGL means you can be sure it will be valued properly.

Diamond Grading

There are a plethora of factors that go into determining the grade of a diamond and often it is a combination of these factors that set the value for a diamond. At AGL, we offer several different kinds of diamond grading reports to best suit your specific needs.

Our Associates

At AGL, we boast a team of highly trained and qualified professionals. Our gemologists, jewelers and appraisers are certified by some of the top institutions in the field including the Gemological institute of America (GIA), the Graduate Gemologist (GG), the Accredited Jewelry Professional (AJP), the International School of Gemology (ISG), and the Registered Gemologist Appraiser (RGA).



Jewelry Appraisal Reports

A full appraisal on any item of jewelry. Includes item description, diamond grading, colored stone identification and grading, digital photo and value. This report is ideal for insurance purposes and can be issued with complete customer information.

Jewelry Appraisal Report Passport Size

Includes current gold, platinum and Canadian dollar values, enhanced digital photograph, full diamond, gemstone and gold specifications and a replacement value for insurance purposes. Presented in a ½ page padded booklet.

Jewelry Appraisal Report Letter Size

Includes the same valuable information as the passport-size appraisal presented in an 8.5" x 11" page format.

Jewelry Appraisal Report Credit Card Size

Includes the same valuable information as the passport-size appraisal printed on a semi-rigid plastic card and presented in a ¼ page padded booklet.

Diamond Grading

4C’s Diamond Report

Examines the four most essential characteristics that determine a diamond’s value (Cut, Clarity, Colour, Carat), as well as Shape, Measurements and Symmetry Grade.

Comprehensive Cut Grade Report

Our most complete diamond report. Evaluates the 4C’s, Shape, Measurements, Symmetry Grade, Total Depth Percentage, Table Percentage, Crown Angle, Crown Percentage, Pavilion Angle, Pavilion Depth Percentage, Girdle Size and Culet Size.

Hearts & Arrows Report

Reviews the pattern of eight symmetrical arrows visible in the face up position (Crown Angle), and the pattern of eight symmetrical hearts visible in the table down position (Pavilion Angle).

Light Performance Report

Assesses the light performance grade of a diamond based on three light reflecting properties (Brilliance, Fire, and Scintillation).

Diamond Plotting

A top-down image of your diamond that maps the inclusions (both visible and microscopic) on the diamond.

About AGL

Since it was established in 2005, AGL has been providing fair, reliable and accurate diamond grading reports and jewelry-appraisal services to insurance companies, law firms, government agencies, jewelry retailers and public consumers.

At AGL, we take pride in the care and integrity that goes into every transaction. All of our appraisals are performed in-house in our state-of-the-art lab by a certified gemologist, which means you’ll have a trained professional to guide you through every step of the process.

Contact AGL

27 Queen St E, Suite 1402
Toronto, ON M5C 2M6

+1 (416) 861-8787