Cat's eye

Cat's eye - originally the name of a greenish-yellow variety of chrysoberyl ( cymophane ) with a specific light the effect of a glare running along the surface. It was first described by Gayuy in 1798. This optical phenomenon resembles the eye of a cat. Currently, the term is used more broadly for various decorative semi-precious stones, in which the movement of an iridescent light strip is noted when the stone is turned. This optical effect (iridescence) is best seen in polished cabochons , but is often seen on an unprocessed chipped or cut stone when it is rotated.

In this category, the Cat's Eye is represented by a synthetic group, namely fibrous borosilicate glass. The technology of production of this glass allows you to achieve a pronounced effect of "cat's eye".

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