Jiuzhaigou specialty cat's eye stone

Jiuzhaigou's local jewelry mainly includes jade, silverware, cat's eyes, crystal and turquoise, jade, coral, eye-eyed stone and crystal. It is also hand-crafted by the local people. The finished product is fine and beautiful. There are mainly bracelets, necklaces, rings, earrings, etc. If you are fond of Tibetan-style jewelry, you must choose one of them. Of course, the price of jewelry for precious materials is certainly a bit expensive. Here I introduce you to Jiuzhaigou specialty cat eyes.

Cat's Eye

Jiuzhaigou specialty cat's eye stone

Introduction: There is a "mirror" in the eye of the Jiuzhaigou specialty cat's eye. There is a layer of film that reflects light behind the retina. This is why it looks so bright. The cat's cones are only green and blue. . Cat's eye, also known as cat's eye and oriental cat's eyes, is a rare and valuable variety of jewelry. Orthorhombic system. The crystal form often has a short column or plate shape. Cat's Eye has a variety of colors, such as honey yellow, brown yellow, burgundy, brownish yellow, yellowish green, yellowish brown, grayish green, etc., among which honey is the most valuable. The cat's eye, also known as the door mirror, is a small optical instrument mounted on the door of a residential house, making it easy for residents to observe outdoor conditions. Cat's eye is also the name of the movie.

Cat's Eye

Source: Jiuzhaigou specialty cat's eye is a kind of gold emerald in mineralogy, it is a kind of spinel mineral. Gold emerald is a lanthanum-containing aluminum oxide with the chemical formula BeAl2O4. Primary mineral crystals are often plate-like, short-column crystals and are orthorhombic. The crystal form often has a short column or plate shape. Cat's Eye has a variety of colors, such as honey yellow, brown yellow, burgundy, brownish yellow, yellowish green, yellowish brown, grayish green, etc., among which honey is the most valuable. Transparent to translucent. Glass to grease sheen. The refractive index is 1.745-1.755 and the birefringence is 0.008-0.010. Dichroism is apparent, dispersion is 0.015, anisotropic. Hardness 8-8.5, density 3.71-3.75 g/cm3. Conchoidal fracture. The common colors are golden yellow, yellowish green, grayish green, brown, brownish yellow, etc. The reason for its color is that the gold emerald mineral contains fluoride ions.

Cause: The reason for the occurrence of opal in the specialty of Jiuzhaigou is that there are a large number of small, dense and parallel lines of rutile-type mineral inclusions inside the mineral. The refractive index of rutile is 2.60-2.90, due to the The large difference in the refractive index of rutile causes the incident light to reflect out of the rutile inclusions and concentrate into a single light to form a cat's eye. The more opaque the gold emerald, the denser the rutile inclusions, the more cat's eye effect becomes. obvious. When a cat's eye gem was illuminated with a spotlight, at a certain angle, the cat's eyes appeared yellow to half of the light, and the other half appeared milky white. If you use two concentrating flashlights to illuminate the cat's eyes from both directions and turn the gemstone back and forth with the direction of the filamentous inclusion body as the axis, you can see that the cat's eyeliner will open for a while and close for a while.

Origin: Mainly produced in Sri Lanka, Brazil and other places, Sri Lanka cat eye has been known to the world. Of course, the cat's eye in the highland areas of our country is also more famous, especially produced in Jiuzhaigou.

Cat's Eye Tips for Purchase: The price of cat's eye is higher than other products, so visitors should carefully consider and purchase before selecting products.