There is no particular emphasis on the number of opals to wear, as long as it is appropriate according to your own situation. How much depends on the size of their hands and beads.

Cat's eye, namely "golden emerald with cat's eye effect", "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".

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. Only Sri Lanka is produced in the world, and the price is quite expensive. It's hard to see anything less than 3 carats in domestic shopping malls.

Opal characteristics:

The identification of cat's eye gems is mainly based on the characteristics of refractive index, density, hardness and inclusion. Cat's eye gems are mostly taupe and translucent in color, and there are also many cat's eye gems with similar refractive index. At the same time, because cat's eye gems are all cut into curved surfaces, the refractive index itself is only an approximation. If the gem is inlaid, its density cannot be measured directly, which makes it difficult to distinguish different cat's eye gems accurately.

Opal is one of the important varieties of the emerald family. The hardness is 8.5 degrees, second only to diamonds, rubies and sapphires, and the color is mostly honey yellow.