What stone is rain stone, with clear standards
The brand of Yuhua Stone is known as the “Queen of the Stone†and is a treasure that Nanjing people are proud of. What kind of stone is the real stone? The Jiangsu Provincial Standard “Yuhuashi Appraisal Specification†jointly drafted by Nanjing Quality Inspection Institute and Nanjing Yuhua Stone Museum has passed the approval of the National Standards Committee and has been implemented. This means that Yuhua Stone has its own “ID card†and it is expected to have professional appraisers like jewelry in the future. Attractions often sell fake rain stone In Nanjing, many small stalls of tourist attractions sell "cheap a lot" of cheap pebbles. The tourists are happy to buy home and keep it as a commemoration. As a result, those who find the line of knowledge are actually fake. "The majority are agate stones." Guo Chunsheng, director of the Nanjing Yuhua Stone Museum, told the Yangzi Evening News that the fake stone on the market is often pretending to be artificial glass, resin or pebbles. Really, Yuhua Stone is very valuable for play. When foreign tourists buy these fake stones, they will lose their desire to collect and watch the rain stone. "This is actually a bad behavior of self-proclaimed signboards." Guo Chunsheng said that in fact, Yuhuashi is also divided into generalized Yuhuashi and narrowly defined Yuhuashi. The generalized Yuhuashi includes the Yuhua stone produced around Nanjing, while the narrowly defined Yuhuashi refers to the rainstone with ornamental and collectible value. the latter. "This norm, one is to guide this market to regulate, let more people know and understand Yuhuashi, to avoid being faked by fakes and defective products." Guo Chunsheng said that if you encounter complaints about the true and false of Yuhuashi, you don't have to "skin" There are standards to follow. The second is to let the collectors of Yuhuashi can “sit in the right place†and distinguish the quality of the rain stone. “Now there are tens of thousands of fans in Nanjing collecting rain stone, and there are many in Beijing and Shanghai.†True or false has a clear standard What kind of stone is the stone? How to distinguish between good and bad? The Yangzi Evening News reporter saw that the "Specifications of Yuhuashi Appraisal" gave ten characteristics of the authenticity of Yuhuashi, and judged the grade of Yuhuashi from six aspects. According to reports, Yuhua Stone is divided into six categories, namely agate, chalcedony, protein, crystal, oily, quartz, etc. The "Specifications" are from gloss, color, texture, transparency, original stone form, main chemical composition. Ten aspects of crystallization state, Mohs hardness, density and refractive index, listed the characteristics of six types of pebbles, such as the agate texture of the rain stone pattern, while the chalcedony has no strip pattern. After the authenticity is verified, I really want to know the quality of this piece of rain stone. Is it a special grade or a third grade? The norm gives a clear evaluation standard from six aspects: texture, color, shape, texture, imagery and rhyme. For example, the texture can be evaluated from the degree of fineness, purity and warmth. What are the characteristics of the corresponding grades? The specification is clear at a glance. "The promulgation of the "Regulations" will also promote the healthy development of this industry." Guo Chunsheng said that there is currently no authoritative organization for the identification of pebbles. Now, according to the "Specifications," this institution will be expected to emerge at the historic moment. Organizations need professional practitioners.†He said that in the future, like the profession of jewelry appraisers, Yuhuashi also has recognized appraisers. How to distinguish the authenticity of the stone The characteristics of true rain stone 1. Texture: Rain stone is a kind of natural fossil. Just like amber, there are many natural shapes and colors in the stone. Now you can see more shapes are striped, and the color is mostly yellow, red, green and white. If there is a landscape or a character in the shape of a rain stone, then this will be a valuable, valuable and precious product that is hard to come by. 2, shape: Stone has been seen by everyone, the stone can not have a regular shape, the rain stone is generally dominated by irregular ovals, the thickness is not the same, the total one sentence, the natural must be irregular. 3. Hardness: The composition of the stone is mainly silica, so the hardness is extremely high. 4, weight: the stone must be relatively heavy, you can feel it when you measure it in your hand. Characteristics of fake rain stone 1, artificial glass and resin fake: glass material is easy to break, the shape is relatively regular (such as spherical), the pattern is relatively regular, there is no natural trace. The resin is more accurate. The counterfeit rain stone is generally a round transparent sheet with some patterns and soft texture. 2, with pebbles as a pebbles: This type of counterfeiting is common in the market, because pebbles have the characteristics of mostly pebbles. The main reason is to look at the color. There is no shape in the pebbles. It is usually a group of dark red or dark, so the pebbles do not have ornamental value. It can only be used as a stone, such as laying a path in a park.
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