About Cat's Eye
Cymophane or oriental cat's eye, a type of chrysoberyl, is the most precious of the stones and is a very hard stone at 8.5 on the Mohs scale. The cat's eye is caused by thin tubes or voids within the crystal structure in cymophane. If the inclusions, called silk, are rutile or asbestos, they form a bit differently in the chrysoberyl and create a star or asterism effect. Ceylon sapphires, black star diopside and star of India rubies are the most familiar among this type of chatoyancy, and the most expensive! Natural cat's eye stones are found in various areas of the world including Brazil, Australia, Sri Lanka (Ceylon), and Russia.
Wrapped Amethyst Cat's eye in silver filled wire with two accent CZ stones. One lavender colored and one amethyst color. Piece created and photo provided courtesy of Joan Ellen Madouse.