Now the cufflinksof greater value in a large part belonged to the works of that era

Coral hardness of 3.5, is relatively soft, but very tough, can be easily processed with a knife or a file or in the rotation of the lathe. Raw coral material is dull shiny, almost polished shiny glass. The coral color of red, pink, white and black four. Most white color like milk. Their prices due to high-end cufflinks had greatly improved. It made the ornaments worn on the sea-blue summer, if people can feel the breeze of the tropical sea breeze. Almost purple, red coral and pink, the latter in Europe and America have always loved to call it as "angel face". Also, a black coral from the southeast coast of Alaska and the Hawaiian Islands. In addition, there is a blue coral is produced in Africa, but has basically disappeared. Of our people and the people of Japan and Southeast Asian countries are more like to wear coral jewelry.
 In China, the emperors, as the coral for the mascot, and often carved into a variety of decorations to watch. Forbidden City in Beijing, there are many red coral carved decorations and full of ornamental value. The ancient Persians, also coral reef as a auspicious thing of evil, often to the children wear. Coral's largest producing countries are Japan, the output ranked first in the world. China's South China Sea have produced. Now the cufflinksof greater value in a large part belonged to the works of that era.  Other places of origin in Tunisia, Algeria, Morocco. Many coral species, colorful, and some like the clouds of the rural ball; and some may Lingshuang chrysanthemums; some Maoruo the cedar; some shaped like antlers. Some coral Jiaocui, the corner of the branch stubble off some hard texture.
Beautiful color and elegant posture, because the coral has always been not only to the embellishment of his study and studio but he had been carved into a variety of jewelry products, won the people's treasure. Buy coral to pay attention to three points, to be a uniform color, two color Hongyan, the more red the more precious, than the third major, the heavier the better. Coral rare confused cufflinks raw materials and other precious stones, because of its unique appearance, structure and shape, making it easy to identify. Although the early found traces of cufflinks, the attempt to develop the application of cufflinks had not stopped until the emergence of the French cuffs (also known as double cuffs) in mid-nineteenth. Completely different coral appearance somewhat similar to the color shell pearl, shell pearl's luster a certain direction, low magnification, showing an extremely like a flame graphics.
 Refined into a counterfeit white coral white beads with shell pearl shell, can be used to identify sub-band trend parallel to the growth of structure and its pink shells. Other identification features of the coral is a small, shallow circular pit, which is the growth of parts of the individual coral. The small pits caused by some perforated marine life may also exist. Imitation coral surrogate celluloid, wood, and sealing wax, which is not unique appearance of a coral. The celluloid issued camphor odor when heated, wood can be used fingernail scratch, exposure to the artificial surface of the wood structure, under a magnifying glass, sealing wax was the appearance of the stream seemed to be glass. All natural and man-made materials are used in the cufflinks.  If necessary, hydrochloric acid available to identify these alternative things, because no one will work with the hydrochloric acid in them. Conversely, coral, shell pearl, shell pearl shell reacts with the hydrochloric acid.
Basic characteristics of ivory and its identification methods; Ivory jewelry oily white, elegant aloof, a large number of people loved. Since ancient times, ivory was used for the production and beautiful decorative items. Been described in the ancient city of ruins and relics have been found in ivory carving. Ivory like the mouth on both sides of the two large teeth, mainly produced in Africa and Asia. The teeth of the elephant is a hard tissue embedded in the jaw. From the precious metals, precious stones, pearls, and ivory to the ceramic, resin and celluloid can all be used to make cufflinks. The external layer of enamel is mainly composed by calcium phosphate, hardness, and the other containing the elastin protein, so have a good elasticity and shine.