oxidized silver jewelry wholesale Is there a desert star diamond? How much dollars do?

treasure jewelry wholesale Almost all minerals, including diamonds, release fluorescence under ultraviolet radiation, from light blue to dark blue, or yellow, red. But this also has certain wavelength requirements for ultraviolet rays. About%-%diamonds release fluorescences under exceeding nano-ultraviolet rays, and some diamonds also emit fluorescence under the ultraviolet short-wave irradiation of nano. Therefore, the ultraviolet testing diamonds issued by the banknote inspection machine in the film has certain feasibility, but it cannot be used as an absolute inspection indicator. In the CibJo conference, the unified term and certificate of diamonds and gems were proposed to discuss naturally to the glowing problem of gems, which is the so -called fluorescence. CibJo's German representatives believe that a perfect diamond must have pure carbon and no other impurities. If there is no compliance with this standard, then it cannot be called a perfect diamond. They said that the fluorescence emitted by diamonds in long waves and short -wave ultraviolet (UV) is an effective and subjective method for detecting diamonds and gem components and clarity. This concept is mainly affected by diamond buyers on diamond clarity and purity. However, this proposal was resisted by gemstones and diamond producers at the time. They claimed that if gemstones learned to use ultraviolet tests to divide the net level, they would no longer submit a gemstone to evaluate the gemstone. Today, the value of diamonds mainly depends on C, that is, color, clarity, size and cutting. Other indicators are just as a reference. Internationally testing diamonds is to write fluorescent indicators, and domestic certificates are not specifically marked. In diamonds with fluorescence characteristics,%of the visible light is blue. Because blue is a complementary color of yellow, and yellow is the most common color in color diamonds, blue fluorescence can make the original yellow diamond look whiter or even colorless. In addition to blue, there are also very small amounts of fluorescence appear yellow, white or other colors. If it is the diamond, under the magnifying glass, the blue faint blue light will appear, which is very beautiful. Many famous diamonds in the world are strong fluorescent diamonds, such as blue afternoon diamonds (HOPE diamonds). In high colors (D -F), fluorescence will bring a creamy white performance to diamonds, thereby reducing the value of diamonds. However, in many cases, fluorescence is very difficult to detect, so that the impact of the brightness and value of diamonds is very small. Blue fluorescence may increase the value of low -color diamonds, because blue fluorescence can make the diamond look white and brighter. But white and yellow fluorescences have reduced the price of diamonds due to the effects of diamond permeability. I want to attach the reference data address, but I was swallowed, so I sent it to a private message. Please pay attention to the upper right corner. Hope to help^_^