Agate refers to chalcedony with a ribbon structure, which is a gelatinous mineral whose main component is silica. The hardness is 6.5-7, the specific gravity is 2.65, the fracture is shell-shaped, transparent to translucent, and the glass is shiny. Agate quality should be white, due to the presence of colored ions or other impurities, will appear gray, red, blue and other colors. The natural red agate is “burned red†and the heat treatment makes the light red agate turn bright red. High quality white agate can also be dyed in a variety of colors. Bracelets are often made on the agate market, and some small pendants and ornaments are also made. Agate mainly produces Brazil, and the main producing area of ​​agate in China is in Fuxin City, Liaoning.
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