Gem Identification
Professional gemstone identification using industry-standard instruments — by a GIA Graduate Gemologist and Certified Gemologist with the American Gem Society.
What Is Professional Gem Identification?
Accurate gemstone identification requires more than visual inspection. As a Graduate Gemologist from the Gemological Institute of America and a Certified Gemologist with the American Gem Society, I use professional gemological instruments — including refractometers, spectroscopes, polariscopes, and microscopes — to identify gemstone species, variety, and origin characteristics.
Gem identification services are available as a standalone service or as part of a full appraisal. Whether you have an inherited stone of unknown origin, a gemstone you wish to verify before purchase, or a piece requiring identification for insurance or legal purposes, each stone is examined carefully and documented in writing.
Identification can reveal whether a stone is natural or synthetic, whether it has been treated, and in some cases provide information about geographic origin. This information is essential for accurate valuation and informed decision-making.
What Gem Identification Includes
Species & Variety Identification
Determination of the gemstone's species and variety — for example, distinguishing a ruby from a red spinel, or a natural sapphire from a synthetic one.
Treatment Detection
Examination for common treatments including heat treatment, fracture filling, beryllium diffusion, and surface coating — all of which affect value and disclosure requirements.
Natural vs. Synthetic Determination
Assessment of whether the stone is a natural gemstone or a laboratory-grown synthetic, using standard gemological testing methods.
Quality Grading
Evaluation of cut, color, clarity, and carat weight using professional instruments and established grading standards.
Written Identification Report
A written report documenting the identification findings, testing methods used, and any relevant observations about the stone's characteristics.
Consultation
A discussion of the findings and their implications for value, insurance, resale, or any other purpose for which the identification was requested.
The Identification Process
Schedule a Consultation
Contact Mark to arrange a convenient time to bring in your gemstone or jewelry. Most identifications are completed while you wait.
Gemological Examination
The stone is examined using professional instruments including refractometers, spectroscopes, polariscopes, and microscopes to determine species, variety, and treatment status.
Research & Analysis
Findings are analyzed against established gemological references and, where applicable, current market data to provide context for the identification.
Receive Your Identification Report
You receive a written report documenting the identification findings, suitable for use with insurers, appraisers, dealers, or legal counsel.
Frequently Asked Questions
Can you identify any type of gemstone?
I identify diamonds, colored gemstones (sapphires, rubies, emeralds, and all other species), pearls, and organic gem materials using professional gemological instruments and established testing methods.
Can you tell if a stone has been treated?
Yes. I examine stones for common treatments including heat treatment, fracture filling, beryllium diffusion, and surface coating. Treatment detection is an important part of accurate identification and valuation.
Can you determine if a stone is natural or synthetic?
In most cases, yes. Standard gemological testing can distinguish natural gemstones from laboratory-grown synthetics for the most common species. Some advanced synthetics may require laboratory testing for definitive determination.
Do I need a full appraisal, or just identification?
Identification alone is available as a standalone service. If you also need a value opinion for insurance, estate, or legal purposes, a full appraisal can be combined with the identification.
Will the stone need to be removed from its setting?
In many cases, identification can be performed with the stone in its setting. If removal would provide more definitive results, that will be discussed with you before proceeding.
Have a Stone You'd Like Identified?
Schedule a consultation today. Most identifications are completed while you wait, and every stone is handled with care and precision.
Book a Consultation