Multi-element pleochroic genstomes

Details Multi-element pleochroic genstomes Multi-element pleochroic genstomes

1979-04-23

1981-04-21

Shay, F. Barry

Jewelry

Gem

A44C 1700

Patent

active

042624975

ABSTRACT:
Multi-element transparent gemstones comprising pleochroic materials are provided which evidence enhanced colors or other unusual optical properties, based on the pleochroic behavior of the material. Doublet stones, comprising two pleochroic materials, and triplet stones, comprising two pleochroic materials separated by an optical rotator, are described. The multi-element gem may have a rotatably mounted pleochroic element or a rotatably mounted optical rotator.

REFERENCES:
patent: 1745607 (1930-02-01), D'Esposito
patent: 2663171 (1953-12-01), Boone
patent: 2699706 (1955-01-01), Boone
Kraus et al., "Gems & Gem Materials", Kraus & Slawson, McGraw-Hill, N.Y.C. 1947, pp. 171-173 relied on.

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