Opal, a major producing area in Australia, has a "color-changing" feature of inorganic gemstones. Most opal stones exhibit a fluorescent multi-diffraction effect under sunlight. The Moss hardness is 5-6, and the English name means "all the gemstones." Guanghua is in one." It was discovered by Europeans in Australia in 1840 and was highly sought after by collectors. It is one of the emerging categories in the international jewelry market. Compared with the Australian market, Opal is still in its infancy in the Chinese jewelry market. Both consumers and collectors often have misunderstandings: Misunderstanding 1: Many people often mistake the black opal that is often said to be black opal. In fact, black opal is the dark opal of the embryo body, not the whole gem is black, but mostly dark blue, sea blue, royal blue, deep purple as the background color, accompanied by various patterns of colorful changes. Black Opal is produced in Leiden Ninrich, New South Wales, Australia. It is the most famous and expensive opal variety, and is highly sought after in terms of color and gems. Misunderstanding 2: The opal's colorful changes are transmitted from the inside, so the glare will fade the opal. In fact, the colorful change of Opal is caused by the diffraction of natural light, which diffracts white light to present color, so the sunlight does not fade the opal. This can be used as one of the methods to identify true and false opal. Only the fire that changes in the sun is true opal, and the opal with little change in the color angle of the conversion angle is probably a fake opal. Misunderstanding three: Some domestic merchants believe that immersing the opal in the water after the glycerin and toothpaste rub will make the opal regain its brilliance. But in fact, the effect is not great. The hardness of Opal is actually not high. Moss hardness is only 5~6, which is half of the diamond. For this reason, Opal is a gem that is relatively easy to be scratched and damaged. After many years of use, it needs to be re-polished to make it heavy. Now brilliance, ordinary wiping, soaking effect is not big. Identification and collection suggestions: "pin method" can be identified As a new imported opal, the phenomenon of fraud has emerged, mainly adopting the low-level fraud method of “stitchingâ€. The surface of the gemstone is true opal, the bottom of the iron ore is made of two layers of stone, and the price is sold together; or it is made of glass. The three layers of stone made from the top and the opal as the interlayer and the slag iron ore are deceptive. Recommended identification method: Magnifying glass observes the side of the gemstone. If you can see the joint seam, it must be a splicing product. Bubbles can also be seen on the joint surface of similar products. Carefully use the tip of the needle to test, the tip of the needle can be poked into the seam, and the true opal density is large. The hardness is too high and it is impossible to insert the needle. Kids Poncho Towel,Kids Hooded Beach Towel,Swimming Changing Hooded Towel For Kids,Kids Hooded Poncho Towel Huaian Meisiyu Textiles Co.,Ltd , https://www.towelplant.com
Opal is still in its infancy in the Chinese jewelry market, interpreting the three major misunderstandings