Diamond bearing microscopic certificate of appraisal
OwnerKazumi Okudainventor
Life of this patent
Estimating the term…
Abstract
A diamond with an inscription comprises a diamond gem structure having an outer surface cut and polished into a specific shape and a microscopic inscription formed at a specific position on the outer surface of the diamond gem structure. The inscription has a pattern indicating the results of expert appraisal of the diamond gem structure. The inscription may be formed by a method including cleaning a selected portion of the stone surface, depositing a layer of metal thereon, coating the metal with a photoresist film, producing thereon a photo impression by using a mask, developing the impression, etching away the uncoated metal portions and then removing the photoresist.
Claims6
A diamond with an inscription, comprising a diamond gem structure having an outer surface cut and polished into a specific shape, and integrally provided means intimately and securely adhered to said gem structure for functioning as a permanent certificate of appraisal of the diamond, said means including a microscopic inscription formed at a specific position on said outer surface, said inscription having a pattern indicating the results of expert appraisal of said gem structure.
Dependencies are inferred from the claim text.