Visual identification of similar gemstones
Under the objective conditions of the right place and the right place, many people can see the same jewel from different angles. You can see N colors. Is this jewel a street neon, changing its color independently? Or are everyone blinded? In fact, it is not, the truth is only one: the "multi-color" of the gem is at play. 1 , the scientific solution of pleochroism What is “multiple color and sex� Looking at these three words, Xiaobai will take it for granted that the pleochroic gemstone is a multi-color gemstone, and others will confuse it with discoloration. With a few examples, you can understand the three concepts of chromaticity, multicolor, and discoloration. Polychromaticity VS multicolor Tourmaline has pleochroism. When changing angles in sunlight, color changes occur. For example, green tourmaline is blue-green and yellow-green to dark brown-green. The watermelon tourmaline in tourmaline is a red-green tourmaline. Multicolor tourmaline. Polychromatic VS discoloration Sapphire has pleochroism and looks blue. It can be seen from blue to blue-green after changing its angle. The sapphire with color-changing effect will have different colors in daylight and under incandescent light. Therefore, there is only one truth about pleochroism, that is, the color of a gemstone surface, which will show different colors as the angle is changed. 2, using chromaticity to distinguish similar gems Whether pleochroism is obvious, and the dichroism and trichromaticity of pleochroism, we can use these to distinguish some similar gems. These four can hardly see pleochroism 1 spinel: distinguishable from ruby ​​with obvious dichroism. 2 Peridot: It can be distinguished from the green tourmaline with obvious dichroism. 3 red garnet: such as maroon iron garnet, red magnesia garnet, rose magnesite, distinguishable from the two-color ruby. 4 Amethyst: It can be distinguished from purple sapphire, purple zoisite, purple tourmaline, and purple spodumene. Dichromatic gemstone VS trichrome gemstone If viewed from three directions (up and down, left and right, front and back), the two hue or the same hue are different in shades, called dichroism; the three hue or the same hue are different in light and deep, called three colors. Sex. To give some practical examples, the pleochroism of the gemstone is in parentheses. A. yellow to brown gemstone Trichrome: yellow to brown gold emerald (yellow / green / brown or colorless / light yellow / yellow), dark yellow topaz (brown / yellow / orange) B. Green gemstone Dichromatic: emerald (blue-green/yellow-green) Trichrome: a variable stone in gold emerald (under daylight: green/purple/light yellow; under incandescent: green/orange/red) C. Red to pink gemstone Dichroism: ruby ​​(pink, fuchsia/orange) Trichrome: medium pink topaz (colorless, light yellow / pale pink / pink), pink purple spodumene (pink / purple / colorless) D. Blue to purple gemstone Dichroism: aquamarine (colorless, light blue/sky blue or dark blue), sapphire (blue/green blue), amethyst (purple/red purple) Trichromatic: blue cordierite (purple blue/lighter blue/light yellow or blue/light yellow/near colorless), medium to pale blue topaz (blue different shades) PS: Blue to purple tanzanite is special, treated with dark blue/purple; untreated blue/green yellow or yellow brown/purple. 3, artifact Amway: dichroic mirror If you can't see the pleochroism of a gemstone, you can use the dichroic mirror, which is used to treat people with bad eyes such as myopia and hyperopia. However, in the face of different pleochroic gemstones, the effect of the dichroic mirror is different. △ dichroic mirror For example, it is difficult for the naked eye to observe the pleochroism of ruby, but it is obvious under the dichroic mirror. However, amethyst and olivine are observed under a dichroic mirror, but pleochroism is not obvious. There are also homogeneous gemstones such as garnet and spinel, and colorless or white heterogeneous gemstones, which are difficult to observe under dichroic mirrors. However, Xiao Bian must affirm that many professional instruments cannot be purchased online from "X Bao" and other places. It is also necessary to verify the authenticity through formal channels and correct use. Therefore, it is best to remind everyone to go to the formal testing organization for identification. Mens Full Suits including long sleeve long leg back zip wetsuits, long sleeve long leg chest zip / front zip wetsuits and zipper free long sleeve long leg wetsuits. It provides you with warmth and body protection from the activities. You can with the full suits for scuba dive, surfing, fishing, triathlon and other water sports. We can make special design or pattern colors for your wetsuits, add an unique charm to your diving suit. Mens Spring Suits,Mens Summer Wetsuits,Mens Full Suits,Mens Winter Wetsuits Shenzhen Seaskin Sports Goods Co., Ltd. , https://www.seaskinwetsuit.com
