A house that cuts its own stones and inscribes them, which makes verification unusually direct.
Founded 1960London3 weighted checks
Graff controls its diamonds from rough to finished piece, and it laser-inscribes its stones with the Graff name and a unique number. That inscription is the house's own verification system and it makes checking a Graff stone more direct than checking most branded jewellery.
The inscription is microscopic and readable under a jeweller's microscope. It ties the individual stone to Graff's records, and the house will confirm a number.
Beyond the stones, the reads are the standard fine-jewellery ones: hallmarking, setting quality, and stone matching across a piece.
Graff laser-inscribes its diamonds with the house name and a unique number, microscopically, on the girdle. A jeweller reads it under a microscope in minutes and it ties the stone to Graff's own records.
Pieces are hallmarked and signed, struck cleanly at even depth, and carry serials. The house will confirm an inscription number.
Significant stones also carry independent laboratory reports, which should be verified through the issuing laboratory's own service.
Ordered by how much each one settles. The decisive checks are the ones worth your first five minutes; the supporting ones only matter once those are clean.
Graff inscribes its diamonds with the house name and a unique number on the girdle. Have a jeweller read it under a microscope. Its absence on a stone presented as Graff is a serious problem, and its presence ties the stone to the house's records.
Stones are matched for colour and clarity across a piece and set to a standard where the metal disappears. Visible variation between stones, or heavy visible settings, are inconsistent with the house's work.
Struck cleanly at even depth alongside the metal content mark and a serial. Laser-etched or shallow marks are failures.
Lovenhall DiamondThe checks tell you how it was made. The instrument tells you what it appears to be, and roughly what its kind fetches.