Coral stone bracelet
There are many kinds of corals, some like a ball of land, some like frost-like chrysanthemums, some like cedar, some shaped like antlers, and some like branches. Some corals are delicate, with broken branches at one corner, while others have a hard texture. It is precisely because coral has a beautiful color and elegant posture, so it has always been used not only to decorate people's study and studio, but also to be carved into a variety of jewelry products, which is deeply cherished by people.
Gem-quality corals are red, pink, and orange-red. Red is formed due to corals absorbing about 1% of iron oxide from seawater during growth, and black is due to the presence of organic matter. It has a glass luster to waxy luster, opaque to translucent, and a refractive index of 1.48-1.66. The hardness is 3.5-4, the density is 2.6-2.7g/cm3, and the density of black coral is lower, which is 1.34g/cm3. Sexually brittle. Strong foaming in case of hydrochloric acid. No fluorescence.
Red coral: Famous origins include Algeria, Tunisia, Spain coastal, Taiwan Keelung and Penghu Islands, Italy and France's Bay of Biscay and other places. Red Coral: An organic gemstone with a pleasant color and lustrous texture, it grows in the deep sea 100 to 2000 meters away from humans. Listed alongside pearls and amber as the three major organic gemstones, it is also listed as one of the Seven Treasures in the Oriental Buddhist Scriptures, and has been regarded as a rich and auspicious thing since ancient times. Natural red corals are formed by the accumulation of corals, which grow very slowly and are non-renewable, while red corals only grow in a few straits (Taiwan Strait, Japan Strait, Baltic Strait, Mediterranean Sea), which are limited by the sea, so red corals are extremely precious. Jewelry made of red coral is highly loved by collectors, and the value of fine red coral is very rapid and is valued by collectors. The red coral is pleasant in color and the texture is lustrous. Red corals are organic gemstones that grow in the deep sea 100 to 2,000 meters away from humans. Listed alongside pearls and amber as the three major organic gemstones, it is also listed as one of the Seven Treasures in the Oriental Buddhist Scriptures, and has been regarded as a rich and auspicious thing since ancient times.