Cat's Eye is a gemstone variety of the mineral chrysoberyl that displays a phenomenon known as chatoyancy, which is a band of reflected light that resembles the slit eye of a cat. Here are some key points about Cat's Eye:
1. **Appearance:** Cat's Eye exhibits a silky or glassy appearance with a narrow band of light that moves across the surface when the stone is rotated. This effect is caused by needle-like inclusions of rutile or other minerals that reflect light in a particular direction.
2. **Color:** The most common color of Cat's Eye is yellowish-green to brownish-green, but it can also be found in other colors such as gray, black, or blue.
3. **Composition:** Cat's Eye is composed of beryllium aluminum oxide (BeAl2O4) with the addition of trace elements that give it its color.
4. **Sources:** Major sources of Cat's Eye include Sri Lanka, India, Brazil, Myanmar, and East Africa.
5. **Uses:** Cat's Eye is primarily used in jewelry, particularly as cabochons for rings, earrings, pendants, and bracelets. It is also used in carved figurines and decorative objects.
6. **Metaphysical Properties:** In metaphysical beliefs, Cat's Eye is associated with protection, good fortune, and clarity of vision. It is believed to enhance intuition and insight, making it a popular choice for those seeking spiritual guidance and inner strength.
Overall, Cat's Eye is prized for its unique optical phenomenon and metaphysical properties, making it a distinctive and sought-after gemstone in both jewelry and spiritual practices.