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Oh, dear, turquoise, to be exact, is a "semi-precious stone" material. It is a member of the "turquoise" family, while crystals, mostly members of the "quartz" family, belong to the large family of "semi-precious stones".
A mineral is called a semi-precious stone because of its pattern, color, hardness, durability, transparency, rarity, crystalline form and market acceptance, which are different from other minerals, giving it a special ornamental and decorative use.
Like turquoise, turquoise is often used in counterfeiting. The white turquoise that has been poured with glue cannot be soaked in water for a long time, and it will be broken if it is soaked for a long time. In addition, exposure to heat or strong acids will also affect its color.
Its color – white, gray.
Structure - On a white background, there are irregular silver veins and patches.
Luster – a natural waxy luster.
Maintenance method of natural turquoise: you can often gently wipe the surface of turquoise with a soft cloth to remove dust on the surface; Turquoise jewelry should be placed in dry air, remember that the bathroom is not a suitable place for turquoise, before bathing, it is best to remove the turquoise in advance, and do not wear a turquoise necklace when swimming.
The advantages and disadvantages of natural white turquoise: the whiter the bottom, the more obvious the gray lines on it, the more beautiful the distribution, and the higher the overall gloss, the better. In general, just pick what you look good at.
Although the yield of white pine is larger than that of green pine, there do not seem to be too many pure natural ones on the market now, and quite a lot of them are potted... Alas...
This is natural turquoise**.
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Magnesite magnesite, known as turquoise. Its main ingredient is magnesium carbonate (MGCo3), hardness, produced in Zimbabwe, Brazil, Australia and China, there are some beaded necklaces made of magnesite on the market, which is a cheap and high-quality jewelry.
Physical characteristics. Crystalline state: usually as a lumpy or crust-like cryptocrystalline aggregate.
Density: 2 76 (+0 14, -0 36) g cm3 Phototic characteristics: heterogeneous aggregates.
Pleochroism: None.
Refractive index: 1 610-1 650, the spot method is usually 1 61 birefringence: the aggregate is not measurable.
Magnification: dark matrix is common.
Ultraviolet fluorescence: long wave: none to weak, greenish-yellow; Shortwave: None.
Absorption spectrum: Occasionally, medium to weak absorption bands at 420nm, 432nm, and 460nm.
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Stone powder and glue pressed into imitation turquoise products. Judging from the brightness of this color, it is estimated that it is an imitation of alumina and glue, alumina is a chemical used to pass off as high porcelain and high blue turquoise, at a gram price of several hundred yuan, but this chemical has certain harm to the human body.
It may also be an imitation of magnesite, a carbonate mineral that is white or off-white in itself, and is used in refractories, building materials, or chemical principles. The texture is loose and often dyed to pass off as turquoise, but the interior is still white.
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It's a pebble, that is, a stone in general.
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It's turquoise, it's turquoise, you can see this at a glance, this is no problem.
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The main component of white turquoise is magnesite, its hardness is generally about 3 4, and the background color is mainly white or gray-white. The main component of turquoise is aluminate, most of the turquoise hardness is 5 6, and its background color is mainly green and blue.
1. Different hardness is one of the main differences between turquoise and turquoise, the hardness of turquoise is generally about 3 4, and the hardness of most turquoise is 5 6, so the hardness of turquoise will be greater than that of turquoise.
2. Different background colors are also one of the main differences between turquoise and turquoise, the background color of turquoise is white or off-white, and the background color of turquoise has green, blue and other face shape colors. Many merchants will dye turquoise instead of turquoise, but when you scrape this turquoise with a knife, you can see that the color of its interior will be white.
3. The difference between white turquoise and turquoise is also in the composition, the main component of white turquoise is magnesite, and its crystalline state is usually lumpy or crusty. The turquoise copper-aluminate, which is actually a water-containing copper-aluminate salt mineral, is usually triclinic crystalline in its crystalline state.
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