Diamond Institute Foundry
European precision grading. Uncompromising standards. Providing the global diamond trade with absolute certainty.
At DIF, we merge centuries of European gemological tradition with state-of-the-art analytical physics. Our mission is to safeguard the integrity of the jewelry industry through uncompromising accuracy, consistency, and technological innovation.
Sub-micron accuracy utilizing advanced spectroscopy and photoluminescence imaging to map crystal lattice structures.
Encrypted digital reports, tamper-proof folio sealing, and microscopic laser inscribed identification on the girdle.
Strict double-blind grading protocols ensuring absolute laboratory independence and complete removal of bias.
Scan the encrypted QR code on any DIF document to instantly authenticate physical reports against our decentralized digital ledger.
Enter the certificate serial number to access our secure global database, or scan the QR code located on the physical document.
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A comprehensive dossier mapping every facet, inclusion, and microscopic nuance. Encrypted via decentralized ledgers, physicalized on a secure archival folio, and verifiable from anywhere in the world.
Proportions
Depth: 61.8% | Table: 57%
Crown Angle: 34.5°
Pavilion Angle: 40.8°
Finish
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Inscription
Laser Inscribed: DIF 89032414
Security: Micro-holographic seal
Comprehensive 4Cs analysis. Detailed inclusion plotting, advanced colorimetry, and flawless cut grading.
Read ProtocolDefinitive identification of CVD and HPHT synthetics, detailing growth method and post-growth treatments.
Read ProtocolAuthentication of mounted gemstones and precious metal verification, documented in an elegant presentation folio.
Read Protocol
Our laboratory is anchored by a consortium of the industry's most esteemed minds. Decades of tactile grading experience harmonized with doctoral-level material physics.
Head of Spectrometry
Ph.D. in Crystallography. Pioneered the modern DIF protocol for identifying HPHT lab-grown anomalies and trace element mapping.
Chief Gemologist
35 years traversing Antwerp and Surat. The final authority on all flawless clarity grading disputes and cut symmetry analysis.
Director of Fancy Colors
World-renowned expert in pink and blue diamond provenance, mapping nitrogen and boron concentrations to determine origin.
Arrange a secure courier collection or locate an official DIF intake center in your region.
Contact Intake Team