A mineral or gemstone exhibiting a wavy, iridescent appearance or cat's-eye effect when light reflects across its surface.
From Greek kyma (wave) + -phane (showing/appearing). A mineralogical term used to describe stones that display wave-like optical effects, particularly chrysoberyl varieties.
Cymophane stones seem to have liquid light moving across them—it's actually caused by tiny parallel fibers inside acting like a mirror, creating one of nature's most mesmerizing optical illusions!
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