Cat's eye, namely "wood stone", "cat's eye", "cat's eye" and "cat essence". Opal, also known as oriental cat's eye, is a rare and precious variety in jewelry. Because the light phenomenon of opal is as flexible and bright as cat's eye, it can change with the intensity of light, so it is named. This optical effect is called "cat's eye effect"

There are many gems with cat's eye effect. Gemmologists call the chrysoberyl with cat's eye effect opal. Generally speaking, opal refers to emerald-green cat-eye gemstone, while other gemstones with cat-eye effect must be preceded by the word "cat's eye", such as aquamarine cat's eye and tourmaline cat's eye.

Stone cat's eye: also known as Alexander's cat's eye, it has both discoloration and cat's eye phenomenon. This is one of the rarest and most precious emeralds in the world.

Stone cat's eye [1]

Produced in Sri Lanka, the price is quite expensive, and it is difficult to see anything within 3 carats in domestic shopping malls. Mr. Xu Lianfu, an internationally renowned gem collector, collects a 14.3-carat stone cat's eye, which is a rare treasure.