Trust the Brilliance.
Verify the Truth.
StonifyLab provides authoritative, scientifically-backed gemstone and jewelry certification recognized by the world's leading auction houses.
Verify Your Report
Enter your report reference number to view and download your certificate details.
Scan QR Code
Quickly verify by scanning the QR code on your certificate.
Our Legacy
The Authority in Stone Identification
Founded in 1998, StonifyLab has grown from a specialized diamond lab in Antwerp to a global powerhouse in gemstone certification. Our independent and unbiased approach ensures that every report we issue is a definitive statement of quality.
- Global network of 12 state-of-the-art laboratories
- Proprietary AI-assisted grading technology
- Unrivaled security features on physical reports
- Team of over 200 world-renowned gemologists
World Class Services
Our Laboratory Expertise
StonifyLab provides a full spectrum of gemstone certification services, backed by decades of scientific research and industry leadership.
Diamond Grading
Comprehensive analysis of the 4Cs: Color, Clarity, Cut, and Carat weight using state-of-the-art technology.
Colored Stone Analysis
Expert identification and origin determination for rubies, sapphires, emeralds, and exotic gemstones.
Jewelry Authentication
Verifying the quality of stones and precious metals in finished jewelry pieces with detailed documentation.
Raw Mineral Testing
Scientific evaluation of rough minerals and uncut stones for industrial and investment purposes.
Cutting-Edge Science
Advanced Laboratory Technology
Our facilities are equipped with the most advanced analytical instruments available in the field of gemology. We don't just follow standards—we invent them through continuous R&D and technological innovation.
Spectroscopic Analysis
Using Raman and FTIR spectroscopy to identify synthetic origins and chemical treatments.
Microscopic Imaging
High-resolution inclusion mapping for unique stone fingerprinting and clarity validation.
Laser Inscription
Microscopic laser engraving of unique report numbers directly on the gemstone girdle.
AI Grading Systems
Leveraging proprietary machine learning algorithms for consistent, unbiased color grading.
One of the World's Largest Independent Grading and Accreditation Services Providers
With 31 laboratories and 18 schools in 10 countries, StonifyLab employs a global workforce of experts and educators dedicated to industry service and consumer protection.
The 4Cs & Beyond
Uncompromising Standards of Excellence
Our grading process combines human expertise with state-of-the-art AI to ensure every stone is evaluated with absolute precision.
Color
Precise grading from D to Z, and fancy colors using master stones and spectral analysis.
Clarity
Detailed mapping of internal and external features under 10x-100x magnification.
Cut
Mathematical evaluation of brilliance, fire, and scintillation for optimum light return.
Carat
High-precision weight measurement accurate to 0.001ct using micro-balances.
Knowledge Hub
Educating the Industry
Access our comprehensive library of gemological resources, research papers, and industry guides.
Gemstone Encyclopedia
Gemologist Training
Industry Whitepapers
Serving the Global Gemstone Market
Strategic laboratory locations in the world's most vital diamond hubs ensure rapid, secure, and expert authentication services worldwide.
Unforgeable Security
Every StonifyLab report features multiple layers of security to prevent fraud, including microscopic textures, unique digital hashes, and laser-inscribed girdle numbers.
Ready to Authenticate?
Contact our nearest laboratory to schedule a consultation or submit your stones for grading.