Correct identification and maintenance of black crystal
Natural black crystal contains black hairy minerals, powerful and attractive. The method of identifying black crystals is roughly the same as that of other crystals. The following small series will introduce you to:
First, use the eye to observe; the natural black crystal is placed under the sun to observe, it can be seen that it contains flocculent material or fine stripes, and the artificial black crystal is mostly made of glass or water residue, which does not contain floc. Shaped matter or stripes.
Second, the tongue; true black crystal has the effect of warm winter and cool summer, so in the hot days, use the tongue to rub the surface, there will be a cold feeling. Artificial black crystals do not have this cold feeling.
Third, the light; the black crystals placed vertically under the sun, can emit a colorful light, but fake crystals are not.
Fourth, the hardness; black crystal crystal hardness is relatively large, with the stone on the black crystal crystal lightly stroked, can not draw traces, but on the artificial black crystal can be traced.
5. Check with a magnifying glass; observe the black crystal under a magnifying glass of 10 times. The bubbles inside must be fake black crystals, and the natural black crystals have no bubbles.
Sixth, check with a polarizer; use a polarizer to watch the black crystal, rotate the black crystal crystal three hundred and sixty degrees, the natural black crystal has four dark and four Ming changes, and the fake black crystal without change. .
Seven, check with hair; through a black hair crystal to see a hair, can see the phenomenon of double shadow, artificial crystal does not have this phenomenon.
Eight, in addition, natural black crystals have dichroism, artificial crystals do not.
Maintenance of black hair crystal:
The black crystal is a kind of hair crystal. It has strong crystal function, and it has the functions of fortune, luck, evil spirits, body protection, safety, confidence enhancement, decision-making power, improvement of gastrointestinal, device view and respiratory function. Black hair crystal jewelry, not only beautiful and charming, endless charm, powerful, long-term bully wear needs attention to maintenance, the following small series will introduce you to the maintenance method of the black crystal:
First, don't collide with hard objects. The black crystal crystal is easily cracked after impact, and there will be dark cracks. Sometimes it may not be seen, but the molecular structure of the inner layer may have been destroyed, which will greatly affect the economic value and perfection of the black crystal. influences.
Second, try not to let it touch the dust. If there is dust on the black crystal, use a soft white cleansing cloth or a brush to gently wipe it; if the surface is oily, it should be lightly washed with warm soapy water, then rinsed with water, and then cleaned. Wipe dry with a soft white cloth. ??
Third, do not place the black hair crystal in a place where the sun is in direct sunlight or near a heat source. Because the black hair crystal is easy to expand when it meets heat, the molecular volume increases, which will affect its jade quality.
Fourth, do not let the black crystal crystal and the perfume and acid, alkaline and other chemical reagents. Because the chemical components contained in perfumes, chemical liquids and the like can cause corrosion to black crystals, which affects the beauty and value of black crystals.
Fifth, don't let the black hair crystals come into contact with the sweat on the body for a long time. Because sweat contains urea, volatile fatty acids and salt, which are corrosive to crystals, long-term contact will damage the outer layer of black hair and affect its vividness.
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