GS1 Laboratories offers a comprehensive range of diamond certification, jewellery appraisal, and valuation services, exclusively for the jewellery trade. Our expertise ensures precision, reliability, and industry-leading standards for professionals in the trade.
Diamond Certification Services
Prior Certification
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A convenient, parcel-sized sticker featuring essential diamond grading details.
- Unique identification number
- Measurements, carat weight, clarity, colour, cut, polish, and symmetry
Detailed Diamond Grading Report
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A comprehensive assessment providing in-depth grading and proportion measurements.
- Unique identification number
- Measurements, carat weight, clarity, colour, cut, and polish
- Detailed profile image
- Option to include a Replacement Value, upon request
Diamond Grading Card
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A secure, tamper-proof certification card that safeguards the diamond and its grading details.
- Unique identification number
- Measurements, carat weight, clarity, colour, cut, and full proportion measurements (on reverse)
- Security packaging ensures the diamond remains sealed with its certification
Jewellery Appraisal & Valuation Services
Insurance Appraisal Reports
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Professional valuations for insurance coverage, providing an accurate and fully documented assessment of jewellery, diamonds, and gemstones.
Reports include:
- Detailed descriptions and high-resolution images
- Precise valuation based on current market conditions
- Fully recognised documentation for insurance purposes
Second Opinion & Verification Service
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Independent assessment for businesses requiring an expert second opinion on diamond grading, gemstone identification, or appraisal reports. This service ensures accuracy, consistency, and confidence in valuation reports.
GS1 Laboratories operates strictly on a business-to-business (B2B) basis. Credentials and trade references are available upon request.
For enquiries or to schedule a meeting, please contact gs1labs@gmail.com.