About jewelry

Jewelry refers to ornaments that used to decorate individuals and related circumstances. Jewelry represents another significant way in which people costume themselves in the effort to self-define. Jewelry is truly an illustrator of the idea of self-definition simply because much of it is entirely non-functional. The rarer the material is made from, the more value it holds. Jewelry like this is used to mark important occasions because it was considered valuable.

Saturday, May 6, 2017

Chrysoberyl cat’s eye

Also called cymophane; in Greek meaning waving light. Fine, parallel inclusions produce a silver-white line, which appears as a moving light ray in a cabochon cut stone. The name chrysoberyl cat's-eye is derived from this effect, which reminds one of the pupil of a cat.

In it structure these innumerable microscopic needles like inclusions create a silky reflection effect. The short term “cat’s eye” always refers to chrysoberyl; all other cat’s-eye must be designated by an additional name.
The finest quality is called ‘milk and honey’, as the stone is a honey color, with the eye, white, like milk. The value of cat’s eye will depend on the effectiveness of the ray, the size of the stone and the color.

Characteristics of Chrysoberyl cat’s eye:
Transparency: transparent to translucent
Color: Golden-yellow, greenish-yellow, golden or yellowish-brown, reddish-brown, black, white and grey
Refractive Index: 1.746 to 1.755
Birefringence: 0.009
Crystal system: Orthorhombic
Optic character: Doubly refractive \
Specific gravity: 3.73

There are deposits in Sri Lanka and Brazil, as well as in China, India and Zimbabwe.
Chrysoberyl cat’s eye

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