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(11) | EP 0 003 174 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Multiple element display objects |
(57) Multi-element gem stones and other display objects comprising pleochroic materials
are provided which evidence enhanced colors or other unusual optical properties, based
on the pleochroic behavior of the material. Doublet stones, comprised of two pleochroic
materials, and triplet stones, comprised of two pleochroic materials separated by
an optical rotator, are described. |