Gemstone Certification
Comprehensive analysis of colored gemstones — species, origin, treatments, clarity, and quality grading by certified gemologists.
Learn more →Independent Gemstone & Jewelry Certification
Trusted appraisal reports backed by gemological science. Look up your certificate by number.
- Independent Lab
- ISO 17025 (planned)
- Certified Gemologists
Three pillars of gemological certification
Diamond Grading
Full 4Cs analysis — cut, color, clarity, and carat — with detailed proportions, fluorescence, and plotted inclusion mapping.
Learn more →Jewelry Appraisal
Complete jewelry evaluation including metal analysis, mounted gemstone identification, craftsmanship and current market valuation.
Learn more →From item to verified certificate
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1
Submit Item
Send your gemstone, diamond, or jewelry piece to our secure laboratory facility.
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2
Lab Analysis
Our gemologists use industry-standard instruments to examine every characteristic.
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3
Report Issued
A signed certificate is generated with a unique cert number, results, and gemologist details.
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4
Customer Verification
Anyone with the cert number can verify authenticity and download the PDF, anytime.
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Why Independent Matters
Trust is the product.
A certificate is only as valuable as the lab that issued it. GSR Labs operates independently — we don’t buy, sell, or hold a financial interest in the gemstones we appraise. Our gemologists work to internationally recognized methodologies, and every certificate carries the signature of the responsible gemologists.
From sapphires and emeralds to mounted diamonds and antique jewelry, our reports give customers and dealers a reliable, verifiable record of what they actually own.
Every certificate we issue is searchable here on gsr-labs.com — enter your cert number at the top of this page to retrieve a copy at any time.
