Green Brazilian Tourmaline Cat's Eye Square Cabochon

About Tourmaline Cat's Eye

Tourmaline cat's eye is tourmaline showing chatoyancy: a narrow, luminous band that appears to glide across the surface when the stone is turned under a focused light. Colours range from green, brown and honey to grey, black and occasionally pinkish or yellowish tones. The effect is usually caused by numerous parallel tubes, fibres or needle-like inclusions inside the crystal. A well-cut cabochon aligns these structures with…