Independent diamond reports
Eligible centre stones are accompanied by a report from GIA or IGI. The report records the stone’s identifying characteristics and grading details. The issuing laboratory remains independent of CHÔHANÉ.
Diamond & Hallmark Assurance
Assurance of the MaisonDiamond &
Diamond &
Hallmark Assurance
GIAIGI
Independent documentation and British hallmarking give every eligible CHÔHANÉ creation a clear, verifiable identity.
Report verification
Your report number can be checked directly with the issuing laboratory. The CHÔHANÉ Concierge can help you read the report and understand how its details relate to your creation.
Precious-metal assurance
Where UK law requires hallmarking, precious-metal fineness is independently tested by a UK Assay Office before the piece is released by the Maison.
How to read a UK hallmark
Three marks. One clear provenance.
CHÔHANÉ
SPONSOR’S PUNCH+750 / 950
FINENESS+UK ASSAY OFFICE
MARK
SPONSOR’S PUNCH+750 / 950
FINENESS+UK ASSAY OFFICE
MARK
The sponsor’s mark identifies the registered party that submitted the piece for hallmarking; the fineness mark records the precious-metal standard; and the Assay Office mark identifies the office that tested it. The exact symbols shown on a finished piece depend on its metal and the Assay Office used.