We blend traditional grading expertise with proprietary JTR technologies. Every diamond and jewel is documented with clarity, transparency and trust.
Independent grading for finished jewelry. From a single solitaire to multi-stone pieces.
Comprehensive expert grading and authenticity verification for jewelry set with natural diamonds.
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Confirms the natural origin of the diamonds and documents metal details such as gold and platinum.
View reportSpecialized grading and origin confirmation for jewelry set with lab-grown diamonds.
View report4C grading and full identification for loose diamonds and colored gemstones.
Identification of natural diamonds and verification of authenticity with advanced instrumentation.
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Precise identification of lab-grown diamonds and confirmation of origin.
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Comprehensive identification of colored gemstones with advanced instrumentation and expert analysis.
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Distinguishes natural diamonds from lab-grown diamonds in your inventory. Clear, reliable results.
Professional sorting of your diamond inventory to your specifications. You focus on production.
Interactive 3D visualization of your diamond or gemstone. Examine every facet from any angle.
Per-item rates for all reports and services. Volume and trade pricing on request.
A JTR innovation that carries the report on the jewelry itself. The Tag pairs every essential detail from the grading record with two built-in security layers, so proof of authenticity travels with the piece.
Carat, color, clarity, weight, metal, brand and product ID, the record's key data on a compact tag.
An iridescent hologram strip that responds to light and cannot be copied, the Tag's first anti-counterfeit layer.
Scan the QR code to confirm the Tag against JTR servers and open the full digital record.
JTR laboratories operate under ISO/IEC 17025. They are recognized by the world's leading accreditation bodies. JTR reports are accepted worldwide.
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Verify a report ↗Each JTR Tag combines the report's grading data with two anti-counterfeit security features. Here's what every zone means.
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The JTR mark identifies the Tag as an authentic, lab-issued record.
Your brand name, product ID and a scannable barcode tie the Tag to your inventory.
An iridescent hologram that responds to light and cannot be duplicated, the first anti-counterfeit layer.
A unique number matching the piece's full digital grading record.
Scan to verify authenticity against JTR servers and open the complete report, the second security layer.
The essentials at a glance: carat, color and clarity, total weight and metal purity.