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Loose Gemstones

Diamonds                  Gemstones of Color


Estate Jewelry



Watch Appraisals

GLA's professional Loose Diamond Certificate includes color/clarity, weight, diameter, diameter deviation, table size, total depth, crown angle, crown height, pavilion angle, pavilion depth, culet size, girdle min, girdle max, girdle deduction, star/upper ratio, proportioning grade, and girdle profile. We offer two types of Loose Gemstone Appraisals, Loose Diamonds and Gemstones of Color. Below are samples of these appraisals.

Instruments Utilized by GLA Gemologists:

All or some of the proceeding gemological instruments may have been utilized during the examination of the subject designated on the reports: A fully corrected triplet loupe, binocular microscope, master color comparison diamond set, electronic carat balancing scale, synthetic diamond detection device, optical measuring device, proportion scope-computer aided non-contact diamond proportioning measuring system, electronic digital caliper, spectroscope system, long and short wave ultraviolet light mechanism, fiber optic illumination, diffused/balanced north daylight color grader instrument, electronic gold/platinum testing unit, refractometer, polariscope and specific gravity liquids.

Security Measures Utilized by GLA for Official Diamond and Jewelry Reports:

Holographic Seal, Tamperproof Background Design, Customized GLA Logo Embossing and an Exclusive Lamination Treatment.

A GLA Certificate is a 3-Fold Portfolio furnished by an 8.50 x 11.00 inch Laminated Report which is accompanied by an Ultra Violet Protected Cover.
The back side of the cover includes a detailed Diamond Quality Analysis Scale for consumer understanding and all protected by a vinyl pouch.

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