Signed Haute Joaillerie
Sell Signed High Jewelry in London — Cartier, Graff, Van Cleef
at Maximum Collector Premiums
Signed creations from iconic jewelry Maisons command significant collector premiums above scrap metal weight. We evaluate signature hallmarks, maker's marks, original presentation boxes, and certificates of origin.
Maison of Gemological Heritage
Rigorous, Transparent & Sovereign Valuation in London
Our advisory brings together GIA, AnchorCert, and HRD trained gemologists with international bullion and high horology specialists. In London, we offer discerning private clients, family offices, and legal estates an uncompromising standard of expertise, discretion, and transactional integrity.
Every item presented is examined in your presence with precision gemological instrumentation (binocular microscope, UV daylight, certified scales, and electronic alloy analyzers). Our purchase offers are immediate, binding, and settled directly with zero brokerage deductions.
Valuation Criteria
Our Scientific & Market Valuation Criteria
Precise weighing on trade-certified diamond balances calibrated to the hundredth of a carat.
Microscopic verification of British Assay Office hallmarks, serial numbers, and maker marks.
Thorough inspection of optical clarity, natural origin, and evidence of heat or color treatment.
Valuation established directly on wholesale Rapaport diamond indices, LBMA fixing, and international auction records.
The Process
Four Steps to Your Immediate Settlement
Initial Contact
Submit our confidential valuation form or contact our London advisory at +33 1 48 87 23 37.
Private Salon or Residence Visit
Confidential appointment at our New Bond Street or Hatton Garden salon, or discreet visit to your residence or bank vault.
Definitive Cash/Wire Quote
Transparent quote established directly on live global wholesale Rapaport, LBMA, and auction benchmarks.
Immediate Bank Wire Transfer
Same-day UK faster payment / CHAPS wire transfer in GBP (£), EUR (€), or USD ($) with official bill-of-sale receipts.
Gallery
Recently Appraised & Acquired Pieces
Questions & Answers
Frequently Asked Questions
How is the purchase price calculated in London?
Our valuation is indexed strictly to real-time international wholesale benchmarks: the Rapaport Diamond Report for certified diamonds, the official LBMA London fixing for gold bullion, and live global auction and collector transactions for signed jewelry and luxury watches.
Do you offer discreet appointments at private residences or bank vaults?
Yes, our accredited gemologists arrange confidential consultations at private residences, family offices, and bank vaults across Mayfair, Knightsbridge, Kensington, the City, and Greater London.
Is the appraisal free of charge?
Yes, our preliminary appraisals and consultations are entirely complimentary with zero obligation to sell.
Confidential Advisory
Appraise Your Jewelry with Certified Gemologists Today
24-hour response, private appointment on Rue du Rhône or discreet on-site visit across Geneva, with immediate bank wire settlement.