Definition of coral Coral, living in the ocean, is a very beautiful animal. It is fixed on the bottom of the sea, and the outer image is a branch, so it is also called "stone flower". Its bones are colorful and varied, and a little decoration is an elegant ornament. Among the stones used for gems are mainly the bones secreted by red corals. The red coral's skeleton is red and very beautiful. It is one of the gemstones of all ages. The cause of coral Corals are products secreted by corals. Corals belong to the coelenterate door, which has a variety of shapes, single and group. The coral polyps, which are the main body of corals, feed on small plankton in the ocean. The corals absorb carbon dioxide and calcium from the sea during the growth process, use these carbon dioxide and water to secrete limestone, and finally turn these limestones into The outer shell of your own survival. Groups of coral polyps live together in groups, grow and multiply from generation to generation, metabolize, and simultaneously release limestone in the process of growth, and bind these limestones together. These limestones are later petrified and compacted to form reefs and islands, also known as corals. The formation of beautiful coral crafts we see is a very difficult process. Small corals are not afraid to work hard to make corals from generation to generation. It is recommended that you buy a coral craft to encourage yourself to work tirelessly for a beautiful career like coral. The formation of corals can be said to be the result of countless corals. The coral we usually see is actually formed by the remains of coral polyps (referred to as corals). Each coral is as large as a grain of rice, and the remains of the corals are smaller. It is conceivable that a beautiful coral is formed. How many coral polyps need to be sacrificed! Coral origin There are three coral producing areas in the world: 1. Mediterranean: There are productions in the Mediterranean coastal countries. Only the coral species have little difference, and the color is also red. The water depth is below 10-20 meters. So many are caught by the diver. Its strain is not large, it is very rare to find a strain of one kilogram. Its diameter is mostly below 10mm, and it is rare when it exceeds 10mm. In addition to the intimate jewelry, there are few materials that can be engraved. 2. Midway Island Sea: Produced in the deep sea of ​​600~1000 meters, there are two different qualities. One is white coral, the red-pink coral is less; the other is mostly pink and more transparent. For a period of time, its output was quite large. The total output of a ship was about 3,000 to 5,000 kilograms, but the fishing operation period was more than half a year. It was very hard and costly. Its body diameter is less than 15mm, most of them are 4-7mm, and they are also materials for personal accessories. 3. Southeast Asian seas: Japan, Taiwan, and the Philippines have production in the waters nearby. The water depth is about 200-300 meters. Its plant shape, texture, color and variety are the most precious and varied in the world. Its varieties Many, there are cow blood corals, peach corals, pink corals, white corals. Basic nature of coral 1. Chemical composition Calcareous corals are mainly composed of inorganic components, organic components and water. The approximate proportions of various components are: CaCO392-95%; MgCO32-3%; organic matter 1.5-4%; water 0.55%. In addition to this, it may contain Fe2O3, CaSO4, and trace components Sr, Pb, Si, Mn, and the like. Shell-type black corals and gold corals are almost entirely composed of organic matter. 2. Crystallization state and morphology Corals are mainly composed of cryptocrystalline calcite, which are peculiar in shape, mostly dendritic, stellate, and honeycomb. The fine ridges produced by the longitudinal tubular passages appear as fine corrugations extending longitudinally along the branches. After polishing, they are dark and parallel lines. It has a concentric configuration in cross section. 3. Optical properties (1) Color: Commonly available in white, cream, light pink to deep red, orange, gold and black. (2) Transparency and gloss: micro-transparent - opaque, waxy luster. (3) Refractive index: The approximation of calcareous corals is 1.65, and the approximate value of horny corals is 1.56. (4) Luminescence: Calcium corals have no fluorescence or weak white fluorescence under long and short-wave ultraviolet rays. (5) Absorption spectrum: no characteristics. 4, mechanical properties (1) Cleavage and fracture: no cleavage, staggered to lobed fracture. (2) Hardness: 3-4. (3) Density: 2.55 g/cm3 of calcareous coral and 2.65 g/cm3 of horny coral. 5, other characteristics (1) Solubility: easily corroded by acid. (2) Thermal effect: Near fire will turn black, heating will produce protein flavor. Coral variety According to the composition, color, etc., the corals are divided into two categories and five varieties. 1. Calcareous corals It is mainly composed of calcium carbonate, containing a small amount of magnesium carbonate, organic matter, etc., including red coral, white coral and blue coral. (1) Red coral: also known as expensive coral. It is usually red to orange-red in light to dark shades, sometimes meaty red. (2) White coral: white, gray, milky white, etc., mainly used in bonsai technology. (3) Blue coral: mainly blue, light blue. Found on the African coast, it has disappeared. 2, horny coral The main ingredients are organic, including black coral and golden coral. (1) Black coral: grayish black to black, almost entirely composed of keratin. (2) Golden coral: golden yellow, yellowish brown, almost entirely composed of keratin, with clear spots on the outside. Coral identification and evaluation Identification (1) Identification of similar gemstones: Gemstones similar to corals have dyed bone products, dyed marble, shell pearls, etc., which can be identified by observing structure, acidity test, density, and the like. (2) Identification of imitation products: Coral imitation products mainly include Gilson coral, red glass, plastic and wood, which can be identified by visual observation of structure and density. (3) Identification of corals: Corals with poor quality can be improved by bleaching, dyeing, filling treatment, etc. These treated corals can be identified by wiping with acetone swabs, observing color distribution, testing density, and detecting. Evaluation The quality of corals is carried out in terms of color, blockiness, texture, and processing techniques. (1) Color: Color is the most important factor affecting the quality of coral. Red is the best. The order of mass of red coral is pure red, red, dark red, rose red and orange red. (2) Block size: The bigger the value, the higher the value. (3) Texture: dense and tough, innocent is better. Those with white spots are second. The wormhole, porous, and multi-cracked are the lowest value. (4) Processing technology: the more beautiful the shape, the finer the processing and the higher the value. Common fake coral jewelry 1 The coral jewelry made from sea willow and sea bamboo has obvious vertical texture and single color, giving a feeling of insensitivity, without the unique pore characteristics of coral jade. 2 Filled coral dyeing is made of loose coral dendritic reef coral, which is filled with dyeing method. The surface is smooth, the actual rough and brittle, and the color is easy to fade. 3 Synthetic coral dyeing is a kind of coral shape which is made of various shellfish or reef-building corals and is molded into plastic. It has natural texture and almost every coral is the same. 4 All kinds of jade imitation corals are dyed with dolomite or calcite. The color is uniform but it is easy to fade and has no luster. Radial pattern of sea bamboo Types and characteristics of fake corals (1) White coral staining: commonly known as sea bamboo, which is characterized by a very pronounced vertical texture and a rough texture. (2) Filled coral staining: It is a shallow sea reef-building coral that is loosely filled with a plastic injection method. Its characteristics are: smooth surface, rough and brittle, and easy to change color. (3) Synthetic coral dyeing: It is a variety of shellfish and gelatinous corals ground into powder, plastic injection into various coral shapes, without natural texture. (4) Various types of jade imitation corals: they are dyed with dolomite and calcite. Its characteristics: if the dyeing is not handled properly, it will fade very quickly. (5) Plastic dyed coral: red coral dyed with plastic products. Its characteristics: (1) The texture is very light (2) The color is easy to fade (3) There is no natural texture and luster. The white coral is dyed into a red coral photo, which is very uniform in color. This is not easy to see, it is really not clear that the seller indicated in the description that this is white coral staining. Coral maintenance 1, please avoid heavy blows, collisions, so as not to damage the gemstone; 2. Please avoid contact with chemicals, acids, alkaline liquids and perfumes; 3. Please use a soft cloth to clean and keep it after each use; 4, please always soak the water, wipe the oil, make it again and again, forever "light and shine"; 5, please wear coral jewelry often, so that it is in harmony with human spirit; 6, please prepare a number of pieces of coral jewelry according to the season, to ensure the "bright as new" effect; 7, non-inlaid red coral necklace, bracelet, pendant chain wear all year round is the best sacred product of blood circulation health care. Red coral jewelry product detail features 1. It is the only life-threatening millennium in jewels. It is shiny, warm and welcoming, crystal clear and sleek. 2. There is a natural diagonal texture, each coral is different. 3. There are natural flaws, such as small white spots, small black spots, small spots are normal, not bad products. 4. Wearing close to the body can promote blood circulation, and it can produce various changes of color according to each person's physical condition, so it can be called the observation station of the human body. 5. Coral jewellery has the functions of beauty care, blood circulation and eyesight, and is also a symbol of good fortune and wealth. Symbolic meaning of red coral Red coral has always been regarded as a symbol of auspicious wealth, and in ancient times it was regarded as a treasure by the royal family. It is said that the ancient Chinese emperors will wear red corals when they are born, which symbolizes blessing and exorcism, and is rich and rich. In the Palace Museum in Beijing, there are still huge red corals in the Imperial Palace of the Ming and Qing Dynasties. The red corals are placed in the rooms of Emperor Guangxu and Empress Dowager Cixi, symbolizing elegance and elegance. The Indians and the Chinese Tibetan people are even more fond of red corals, even using them as amulets and praying for God's blessing. The ancient Romans have been using red coral for a long time. They believe that red coral has the functions of eliminating disease and fighting disasters, stopping bleeding, giving people wisdom and beauty. Some voyagers also believe that wearing red corals can prevent lightning and prevent hurricanes, and make the sea calm and peaceful, so the Romans call it "red gold", which casts a mysterious color on the red coral. Red coral is also the mascot of Buddhism, and red coral beads are used as tributes to the Buddha. It symbolizes wealth and auspiciousness and is loved by people from all over the world. What kind of red coral is the real thing? It is reported that "Millennium Coral Red" is a precipitate of the bones of the sea called coral polyps. It is shaped like a tree and its color is like fire. It is listed as a seven treasures of Buddhism with gold, silver, pearls, agate, amber and glaze, among which red coral is the most precious. Corals grow in the deep sea of ​​200 to 2000 meters, every 20 years old, three hundred plus one kilogram, is regarded as a treasure in the sea, the best in Tibet. 80% of the world's red coral production is produced in Taiwan. Red Coral won the title of "China National Treasure". ·Red coral represents the origin: Taiwan deep sea ·Red coral color range: AKA red (often said Aka deep red), MOMO red (slightly shallower than Aka red, pink / orange red), ANGELSKIN pink (often said angel face), white, white 9mm sardine red coral bracelets used in the previous period, it is relatively red in Sardinia. What is the price of red coral? Since the coral grows 1 inch in 20 years, it takes 300 years for each kilogram to grow. The value is indeed very expensive. I once saw a red, bloody, almost innocent top red coral bead necklace (round bead diameter 1.6cm) sold at an auction for 90,000 yuan, and it was still over-the-counter. Another bead bracelet of the same color (the diameter of the ball is 0.8cm) is also sold for 10,000 yuan (it is definitely the price of the previous years, and now it has several times). Therefore, the price is also one of the methods used to identify the authenticity. Too cheap goods are not good! Queen red coral in the gem Among all kinds of organic gemstones, pearls have been the leader since ancient times and are the most prestigious and elegant ornaments. Enjoy the reputation of "the treasure of the abyss" and "the queen of the gem". But in modern times, due to the popularity of cultured pearls, pearls have gradually faded away from the mystery and honor of her past, let go of their identity and fly into the homes of ordinary people. Relatively speaking, in the halls of organic gemstones, red corals have revealed a trend of gradually surpassing pearls and become a new upstart in people's minds. At some of today's jewelry fairs, a premium red coral ring costs more than $100 per carat. Red coral has been loved by people since ancient times because of its beautiful color and strange shape. Red coral has been loved by people since ancient times because of its beautiful color and strange shape. In ancient China, in addition to the use of pruned corals, corals are also worn as ornaments. In Buddhism, red is a symbol of the Buddha's incarnation. People believe that wearing red coral ornaments can be blessed by the Buddha; red coral is also regarded as a symbol of the sun. When the emperor worshipped the gods in the Japanese altar, he was required to wear the beads made of coral for peace. The red coral was also the mark of the official ranks of the Qing Dynasty. Only the ministers of the official residence were allowed to use the beads made of red coral. . In foreign countries, red coral has been widely used to make amulets to avoid evil. Large coral trees are now unusually rare due to the long-term predatory collection of humans. According to reports, the largest coral tree discovered in modern times was salvaged by Taiwanese fishermen in the waters of Midway Island in 1980. It is 1.5 meters high, with a trunk diameter of 12 centimeters and a net weight of 60 kilograms. The price was NT$6 million. Due to the continuous fishing over the years, the production of red corals has been declining year by year, and the quality of the people is especially rare, which makes their prices increase and prices continue to rise. A good red coral necklace is worth tens of thousands of yuan, and the best coral price can reach tens of thousands of yuan. This is in stark contrast to the growing popularity of cultured pearls, which constitutes a trend to catch up with pearls. Medicinal value of red coral Red coral is the life treasure in the world of jewels like amber. In fact, it can not only produce beautiful ornaments and ornaments. It is also a kind of medicine treasure with unique effects. It has many medical effects such as beauty care, heat, blood circulation, eyesight, seizures, perspiration and diuresis. More than 400 years ago, the master of medicine, Mr. Li Shizhen, recorded the corals in the classic masterpiece "Compendium of Materia Medica": "Go to the eyesight, calm the nerves. It is used for eyesight, epilepsy, ugly nose". With the development of modern medicine, people have gradually discovered that red coral also has special functions to promote the body's metabolism and regulate endocrine. Therefore, some people call it "green jewelry" together with pearls. 100% Polyester Shu Velveteen,Knitting Fabric Velveteen,Velveteen Textile Raw,Velveteen Textile Fabric SUZHOU JINYULAI TEXTILE CO.,LTD , https://www.jyltextile.com
