Now I can see a lot of jade jewelry marked "Chalcedony". These ornaments are mostly translucent and have a strong texture. They are cheaper than other high-end jade, so they are widely loved by the pro. If you are now different from Baidu and agate, you will find that there is a kind of jade and agate that are not the same type of jade. Chalcedony is actually a kind of quartz, a general term for cryptoplasts of SiO2, which is a variant of quartz (cryptocrystalline). The main chemical composition: SiO2; can contain Fe, Al, Ti, Mn, V and other elements. Crystalline state: cryptocrystalline aggregates, in the form of dense blocks, may also be in the form of spherulites, radial or fine fibrous aggregates. In fact, all silica crystals can be summarized into the chalcedony category, including crystal, yellow dragon jade and many other jade and semi-precious stones. Agate is a chalcedony with distinct concentric layered strips, parallel strips or various patterns, usually containing little or no clayy impurities. There are many patterns of agate. So what is the difference between the two, let's take a look! 1. Stripe: Agate belongs to medium and low grade jade raw materials, cryptocrystalline structure (that is to say, crystal particles are not visible), and has obvious band-like stripes and glass luster, which is easy to distinguish. Need to pay attention to the difference between agate and chalcedony, agate cryptocrystalline, with obvious strip texture, glass luster, and chalcedony is microcrystalline, no strip-like texture, glass to grease luster. /2 Chalcedony The difference between it and agate is whether there is a pattern. Strictly speaking, there is no feature of the strip pattern. It can only be called "chalcedony", which can be called agate. But in the current market, some chalcedony without pattern is also regarded as "agate", which is inconsistent with the meaning of ancient agate. Many of the jade in jade are jade raw materials. Because of their different colors, they are divided into: red chalcedony (also known as Inka), green onion, blood chalcedony (also known as bloodstone) and Biishi (formerly known as Jasper). )Wait. 3 Color: Agate can be divided into the following varieties according to the morphological characteristics: onyx (with skein and agate), red onyx, moss agate (also known as denture agate), landscape agate (also known as walled city) Agate), fire agate, water agate. The famous Nanjing "Huahua Stone" is a kind of agate with a concentric structure. The evaluation and purchase factors of agate are color, transparency and blockiness. The process requirements are bright, pure, thick color layer; smooth surface, high transparency; uniform and clear texture, good linearity; fine texture, toughness; no cracks or cracks; 4 large blocks. Red and blue are preferred. Chalcedony varieties: green chalcedony (also known as Australian jade, also known as Inka stone in China), thick green chalcedony, Bi Shi, blood chalcedony (also known as bloodstone). The color of chalcedony is pure and beautiful, and the bigger the block, the better. The quality of green chalcedony and green chalcedony is more precious. The chalcedony is processed into jewelry such as ring faces, bracelets and necklaces. 5, agate and chalcedony can be distinguished according to different colors, stripes and other patterns. Chalcedony products are easily confused with Dongling stone, dense jade, jasper, etc., and can be distinguished according to differences in color, texture and density. The chalcedony product has a bright, cryptocrystalline structure with a fine texture. The quartzite particles such as Dongling Stone are coarse and fine-grained, and the texture is relatively rough. Jade similar to green chalcedony has green jade, turquoise, and Tianhe stone. The green jade plaque interweave structure, visible phenocryst or fibrous jadeite crystal. Turquoise transparency is poor, porcelain gloss, low hardness, 5-6. Tianhe stone has obvious lattice-like stripes. Kids Sandals,Child Sneakers,Children Sandals,Kids Sport Sandals GUANGZHOU CARMEN TRADING COMPANY LIMITED , https://www.carmentrading2020.ltd
