Direct Onsite Laboratory Assessment
We bring the laboratory to your premises, ensuring maximum security, zero transit risk, and immediate certification for high-value collections.
Signature Services and Valuation
Professional Reporting for Trade and Private Collectors
DGJV services are tailored for jewellers and private collectors who require practical, professional report detail without unnecessary complexity. Our Diamond Grading Jewellery Valuation Service issues Independent Diamond Grading Laboratory (IDGL) certificates — the same trusted certification longstanding trade clients have known us by for decades.
Our Role and Purpose
DGJV exists to give jewellers and private clients clear, reliable report guidance grounded in years of hands-on gemmological experience. We combine practical technical assessment with client-ready communication so every diamond, lab-grown stone, gemstone, and jewellery item is documented with confidence for trade, insurance, probate, and resale decisions.
How You May Access DGJV
Postal Certification
Items can be sent to Leeds and are returned via Royal Mail Special Delivery. Average turnaround for postal certification is forty-eight hours.
Leeds Appointment
Bring stock directly to DGJV in Leeds by appointment for in-person handling and assessment.
Inside the Service Atelier Workflow
View the complete workflow gallery to see process imagery, inspection steps, and how work is carried out in practice.
Lead Times and Secure Logistics
Postal projects are typically completed within an average of forty-eight hours. Direct onsite laboratory assessment is available for high-value collections and structured around your requirements.
We exclusively use Royal Mail Special Delivery Guaranteed by 1pm next day for all returns — with full tracking, signature on delivery, and compensation cover up to £750 (with the option to increase to £2,500).
Discuss Your Requirements
Share your expected quantity, item category, and preferred service route. DGJV will return a tailored recommendation.
Request a Tailored Service Proposal