Patent · US Active

Enhancing the optical characteristics of a gemstone

US8479538B2 · kind B2 · utility

5Cited by

11References

24Claims

0Family size

Assignee

CALIFORNIA INSTITUTE OF TECHNOLOGY · US

Inventors

George Maltezos · Fort Salonga, US
Axel Scherer · Laguna Beach, US
Jeremy Witzens · Aachen, DE

Key dates

Filing date	Oct 5, 2011
Grant date	Jul 9, 2013
Priority date	—
Expiry date	Oct 5, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG01N21/87
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Various embodiments described herein comprise a gemstone or other piece of jewelry, which incorporates one or more diffractive optical elements to enhance the fire displayed by the gemstone. In certain embodiments, the diffractive optical element comprises a diffraction grating etched on one or more facets of the gemstone.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.