Opal was known as a Roman Empire and was of great value. According to Pliny, the Nunnery of the Senate has a very beautiful opal. He is very fond of it. At that time, the ruler Anthony let him give it, otherwise he will be exiled. As a result, Nonining can choose to exile and refuse to put it. Opal dedicated to Anthony, the charm of Opal can be seen. The following China Jewelry Merchants Network Xiaobian will introduce you to the common misunderstandings of Opal Stone and the value of black opal. Common Opal Misunderstanding Opal should always be soaked in water to prevent rupture. The original opal also needs to be treated with oil moisturizing friction to protect it from cracking. The original opal structure is non-porous and sealed, that is, it is immersed in water and oil. It doesn't make any sense in other liquids. If you immerse Deborah Opal or Trimble Opal in water for a long time, it will be fogged and damaged. Black opal is black (like black onyx). Black opal is the dark opal of the embryo body, not the whole gem is black. The glare will make the Opal leg color opal rely on the diffracted white light to present the color. It won't fade because of strong light. Rubbing oil with oil will make it damaged and lose color. Its practical oil rubbing opal is meaningless. Rubbing with glycerin, toothpaste or soaking in water will make Opal reproduce the original opal. Finally, due to slight scratches in use. The surface needs to be re-polished to reproduce the brilliance (usually after many years of use), and it is meaningless to soak the opal in the rose-red liquid to enhance its color. Light causes the color to emerge from the interior of the opal. The color of the opal is due to the natural light diffraction effect. Warming the opal by hand will enhance its brightness. Extremely high temperatures and droughts will cause the opal to crack. Black opal value It relies on a number of factors: embryo body tone, brightness, pattern style, color layer thickness, flaws, and color-changing games, all of which play an important role in the valuation of Opal. Opal usually calculates the price in units of "carats". Other important factors include cutting, sanding, size and shape. 1, embryo body tone Embryo tonality is one of the most important factors in measuring Opal's value. The body tone is the overall tone and color of the entire opal, ranging from black to milky white. Opal, which usually has a black or dark body tone, is more valuable than light or creamy white. Most of the black opals are produced in Leiden Ninrich, New South Wales, Australia. They are the most precious opal. The usual market price is about 15,000 Australian dollars per carat (about 100,000 yuan). Sparkling opal often has a deeper body tone. The white opal has a light body color and a low value. In addition to the above analytical principles, the value of crystal opal is based on its transparency. Some crystal opal are called "black crystal opal" because of the deep and expensive color of the embryo. 2, brightness Brightness is primarily the brightness and clarity of the colors presented by Opal. When opal is observed from the front, the range of brightness of the color is divided into bright, bright, soft or dim. 3, the pattern Opal's color segments are composed of patterns, each of which is unique, and different color patterns also determine the value of opal. The beautiful patterns are called colorful, forged belts, straws, chaff, Chinese calligraphy, etc., and some irregular patterns will symbolize some wonderful things or like a painting, we will make it a good one. name. The superior pattern will be very clear, including the sea of ​​flowers, rotation, lightning and flame. Poor patterns are more blurred, like moss and grass. 4, color block The thickness of the opal in the entire opal is related to the size and shape of the opal itself. Sparkling opal is only a very thin layer of opal due to geological formation, which is important to consider and calculate when measuring value. factor. 5, the color appears Opal has a different color and brightness due to the diffraction of white light due to the structure of the silicon spheres contained therein. Red opal is usually more valuable than green opal, and green is more valuable than blue. Nature does not often produce red opal, which is rich in green and blue opal. The red color in the opal results from a relatively large arrangement of silicon grains in the inner microstructure of the opal, whereas the blue color is produced in a relatively small arrangement of silicon particles. 6, 瑕疵 A variety of cockroaches will weaken the value of opal. There are almost no signs of obvious cracks on the surface of Opal. There are many fine cracks on the surface of the opal that will become worthless. Blisters or other mineral impurities are sometimes found under or inside colored opals, as well as in background linings. Other defects such as inferior opal lines, gray lines and air bubbles. The color and pattern of high quality opal should be continuous and vary from angle to angle. When opal does not produce a changing surface, the color appears only from one angle or the base material such as iron ore appears on the surface through the gemstone and the stone is devalued. Towel Set,Bath Towel Sets,Towel Sets,Luxury Towel Sets Huaian Goodlife Textile Co., Ltd. , https://www.goodlifetowels.com
