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Anonymous users2024-02-11Tourmaline is a common name in China's jewelry industry and belongs to the tourmaline family in mineralogy. The chemical formula is XR3AL6B3SI6O27(OH)4, where X is Na, K, Ca, and R are various metal ions, and the type and content of R directly affect the color of tourmaline. It belongs to the trigonal crystal system.
The crystals are complex and trigonal columnar. There are a variety of colors, including colorless, rose-red, pink, red, blue, green, yellow, brown and black, among which azure blue and bright rose red are the top grades. Glass luster, transparent to translucent, refractive index is general, birefringence, dispersion.
It has strong pleochroism. hardness, density grams of cubic centimeters. No cleavage, shell-like fracture.
Tourmaline is also piezoelectric and thermoelectric, which is where the name tourmaline comes from.
In the international jewelry market, tourmaline is a best-selling mid-range gemstone, of which the latest discovery of bright blue Brazilian tourmaline is one of the most popular gemstones in the world today, and its ** can be compared with high-end gemstones. As the birthstone of October, it has the meaning of "peace" and "peace".
Tourmaline with gem-quality value is abundant in the core of intense albite and lepidolized microcline albite pegmatites. The world's best-known tourmaline is found in Brazil and the United States, where the bright blue tourmaline found in Brazil is one of the most popular gemstones in the world; Sri Lanka, China, Myanmar and Africa also produce large quantities of gem-quality tourmaline; Altai in Xinjiang also produces tourmaline gemstones of various colors, but the general color is often lighter, and there are fewer high-grade ones, and most of the tourmalines produced in Yunnan in China are low-grade gemstones.
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Anonymous users2024-02-10Jade, a turquoise-like gemstone.
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Anonymous users2024-02-09Ouch, it's HBEBLA, my idol yes If you want to know SHE more clearly, just look at their mainland support club:
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Anonymous users2024-02-08hebe
Check out the Herb Fairy de Lodge.
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Anonymous users2024-02-07Because Xibi is a homonym for hebe, Xibi is the nickname of hebe.
I don't know the second question either.
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Anonymous users2024-02-06It is an abbreviation for CB Bar Come Back, and the pronunciation is Xibi.
Speaking of which, there have been many Korean groups CB recently....
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Anonymous users2024-02-05It's going to be CB, but !! Yikes
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Anonymous users2024-02-04Hibi cb homonym means return.
Abbreviation for comeback.
Substitute comeback for get: Kimchi returns.
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Anonymous users2024-02-03Xibi==> cb==> comeback==> (The singer has a new work) returns (stage).
I'm in the same situation, I feel like it's a virus.
Autumn yellow, yellow like gold. The golden waves of wheat are rolling, the golden ears of rice are overflowing, and the golden yellow is the joy of the harvest.
After deciding to use wood flooring as a floor decoration material, you must follow the following steps to purchase: Before purchasing, you must first know the level, orientation and area of your residence, and it is best to draw a floor plan for overall planning, specifically allocate the use functions of each room, and then choose the floor according to local conditions; Generally speaking, young people are busy with work and study, so it is impossible to be completely consistent with the requirements of the elderly and children. It is also necessary to consider the performance of the floor, whether it is temporary or long-term, and whether it will cause operation and damage to the surrounding buildings during the paving construction; Finally, you should also consider your own financial ability and budget for decoration costs. The disadvantage of laminate flooring is that when laying a large area, there will be the phenomenon of overall arching and deformation. >>>More
Ecstatic, surprised, ecstatic, ecstatic, surprised.
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My favorite mode of getting along with girlfriends is to keep a safe distance in intimacy. We talk about everything, laugh and play, and take care of each other, which are all natural and relaxed states between friends, but under this harmony, we also maintain a certain sense of distance. Every time I go to each other's house to play, I will definitely notify in advance, after all, I don't live alone, and sometimes I suddenly parachute in, which will bring a lot of inconvenience to the other party. >>>More