Lime Oval Chrysoberyl Cat's Eye from Sri Lanka

About Chrysoberyl Cat’s Eye

Chrysoberyl cat’s eye is a variety of chrysoberyl, a beryllium aluminium oxide with the chemical formula BeAl₂O₄. Its colours range from honey yellow and golden brown to yellowish green and olive. The material is usually translucent, allowing light to pass through but not forming a clear image. Its defining feature is chatoyancy: a narrow, moving band of light resembling a cat’s pupil. This effect is caused by numerous…