Excellence in Gemological Services
GGDL is the most progressive and trusted gemological institute in India, providing internationally recognized diamond grading, gemstone identification, and jewelry evaluation services. Our laboratory is equipped with cutting-edge technology and staffed by highly qualified gemologists.
Our Core Services
Diamond Grading
Complete 4C analysis with proportion diagrams, clarity plots, and fluorescence assessment. Our trained gemologists evaluate every facet of your diamond using standardized international grading criteria.
Gemstone Identification
Scientific species and variety determination for all colored gemstones — including sapphires, rubies, emeralds, and rare collector stones. We document origin, treatments, and all optical properties.
Jewelry Evaluation
Comprehensive assessment of finished jewelry pieces covering gemstone identification, metal purity testing via XRF spectrometry, and detailed craftsmanship documentation.
Online Verification
Instant digital verification of any GGDL certificate through our secure online portal. Every report number is linked to a tamper-proof digital record with QR code scanning support.
Bulk Grading Services
Volume grading solutions for jewelry retailers, manufacturers, and wholesalers. Streamlined intake, priority turnaround, and dedicated account management for recurring business.
Education & Training
Workshops and training sessions for jewelers, retailers, and gemstone enthusiasts. Learn diamond grading fundamentals, gemstone identification basics, and certification best practices.
How to Get Your Stone Certified
Contact Us
Reach out via phone, WhatsApp, email, or our contact form to discuss your requirements.
Submit Specimen
Walk-in to our laboratory or ship your stone via insured courier. We provide packaging guidance.
Expert Analysis
Our certified gemologists perform comprehensive testing using advanced laboratory instruments.
Receive Certificate
Collect your tamper-proof, digitally verifiable grading report within 3–5 business days.
The GGDL Advantage
Accredited Laboratory
Operating under international gemological standards with state-of-the-art equipment and certified professionals.
Fast Turnaround
Standard reports delivered within 3–5 business days. Express service available for urgent requirements.
Tamper-Proof Reports
Security-printed certificates with QR verification, holographic elements, and encrypted digital storage.
Global Recognition
GGDL certificates are accepted and trusted by jewelers, insurers, and auction houses worldwide.
Competitive Pricing
Transparent, fair pricing with volume discounts for trade professionals and repeat clients.
Expert Consultation
Our gemologists are available for personalized consultations to help you understand your stone's characteristics.
Corporate & Wholesale Partnerships
GGDL offers tailored solutions for jewelry retailers, manufacturers, wholesalers, and auction houses. Whether you need bulk grading, private-label certificates, or on-site evaluation services — we have a package designed for your business needs.
- Volume pricing with dedicated account manager
- Custom-branded certificate formats
- On-site laboratory evaluation for large inventories
- Priority 24-hour express turnaround
- Regular industry insights and market updates
Ready to Work With GGDL?
Whether you need a single stone certified or a bulk inventory graded, our team is ready to assist you. Get in touch today.