Citrine can bring people happy mood, can bring people a stable state of mind, can make people calm, calm and impulsive mood. Citrine is a precious ore, a kind of gem. If it is natural citrine , then the price is more expensive, in order to prevent some shoddy products, the following small series briefly introduces the identification method of natural citrine .
Optical identification: Glass is a non-crystalline homogenous body, crystal is a crystalline heterogeneous body, in the polarizer rotate 360 ​​degrees there is a clear dark change in the natural crystal, no change is fake crystal. In addition, some natural crystals such as amethyst have dichroism, while pseudocrystals do not.
·Hardness distinction: Crystal hardness is 7, the glass is usually about 5.5, so when the crystal is engraved glass, the crystal is traceless. Love Tip: hardness test only for the crystal family of gems, do not use this method to identify non-crystal family treasures, such as honey wax, coral, oysters, pearls and other organic gemstones, or jade and other jade family. In addition, from the gemological point of view, hardness and brittleness are two concepts, which means that the hardness does not mean that it is not bad, so be sure to identify the specific properties of your baby before the appraisal, and do not be too savage when wearing it. .
· Hair identification (birefringence): The identification of hair is specifically for spherical crystals: Put the crystal on a hair wire, gently turn the spar, when the double direction appears when turning to a certain direction, a hair becomes Two, the effect is clear and obvious, this is a birefringence phenomenon caused by the crystal arrangement of natural crystals, pseudo crystal can not be done. The more obvious the double-shadow effect is, the better the crystal quality is, and some natural crystals with too many impurities may not be double-folded, or hair twisting, straight line breakage and the like may occur, and the quality of such spar is worse.
• Thermal Conductivity Test: The thermal conductivity meter is adjusted to the green 4 grid test gems. The natural crystal can rise to the yellow 2 grid. When the area is large, it rises to the yellow grid, and the false crystal does not rise.
Touch method: crystals are crystals, heat transfer is fast, glass is amorphous, heat transfer is slow. Therefore, holding the crystal will feel cold, and after wearing it for a short time, it will synchronize with the body temperature; while the glass has a warm feeling.
· Inclusion observation: Observe with a 20× jewel magnifier: There are often natural gas-liquid inclusions, flocs, symbiotic minerals, ice cracks, spalls, etc. in the crystal. Most of the flawless crystals have problems. Frequently swirling lines on the glass surface and in the interior resemble the phenomenon of uneven mixing caused by pouring honey into clean water. In addition, regarding the problem of air bubbles, there is a saying that the inclusion of bubbles in general is classified as glass, which is very rigorous.
First of all, natural crystals may contain bubbles, which are natural gas liquids mixed in during the crystal growth process. The bubbles are fine and dense, with a moist texture, like the fog in the stone, and they are distributed, such as clouds and fog, with a sense of beauty. Poor glass is indeed easy to contain bubbles, irregular shape and arrangement, feeling awkward, lack of natural sense of integration. However, from a practical point of view, the glass used to counterfeit crystals is often well-made, and it will not be too noisy, otherwise it will only be on the ground.
Fracture identification: The style of glass breakage is familiar to everyone. It is smooth and curved, such as the dent of a shell. Crystal is an ore, and the stone texture can be seen at the fracture surface. Crystal is a crystalline body.
· Craft: The more precious gems, the more refined the grinding, such as the cutting of diamonds, has become an art. Glass fake gemstones are inexpensive, so they are rough, they are not smooth on the surface, and the intersections between the facets are not straight and the holes are not exquisite - especially in this hole, the glass is brittle and the holes can be easily broken. Observed.
The relevant information about natural citrine is introduced here for everyone. I hope this article will help you. If you still have anything you don’t understand, you can follow our website and we’ll get back to you as soon as possible.
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Metal silicon, also known as Crystalline Silicon or Industrial Silicon, is mainly used as an additive to non-ferrous based alloys. Metal silicon is a product made of quartz and coke in an electric furnace. The content of silicon in the main component is about 98% (in recent years, 99.99% of Si is also contained in metal silicon), and the remaining impurities are iron and aluminum. , calcium, etc.
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