Your Stone's Permanent Record
GGDL issues comprehensive grading reports that serve as the permanent scientific record of your diamond or gemstone. Each report is secured with multiple anti-fraud features and can be verified online instantly using the unique report number or QR code.
Certificates We Issue
Diamond Grading Report
Comprehensive 4C analysis covering carat weight, cut, clarity, and color grade along with proportions, symmetry, polish, and fluorescence assessment.
Gemstone Identification Report
Detailed species and variety identification for colored gemstones including origin determination, treatment disclosure, and optical property documentation.
Jewelry Assessment Report
Complete evaluation of finished jewelry pieces covering gemstone identification, metal purity testing, and overall craftsmanship quality assessment.
Anatomy of a GGDL Report
Every certificate follows a standardized format that documents every measurable attribute of your specimen:
Certificate Security Features
Tamper-Proof Design
Each certificate uses security printing, microtext, and holographic elements to prevent duplication or alteration.
QR Code Verification
Scan the QR code on any GGDL certificate to instantly verify its authenticity on our secure online portal.
Online Database
Every report is stored in our encrypted digital database with instant lookup by report number at any time.
Unique Report Number
Each certificate receives a unique sequential report number that cannot be duplicated or reassigned.
Archival Paper Stock
Physical certificates are printed on archival-grade paper that resists aging, water damage, and UV fading.
Authorized Signatures
Each certificate bears the authorized signature of the grading gemologist and laboratory director.
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