What does sandstone mean in the Gregorian calendar?

Placer is a metamorphic rock-quartzite, which is mainly composed of quartz and contains flaky crystals (usually green mica) of other minerals. It is also called "Indian jade" inappropriately, while the jewelry industry in China is usually called Dongling Stone. Malaysian "Ma Laiyu" and China's "Mi language" are equivalent.

1 to avoid collision with hard objects. Although the hardness of Dongling jade is high, it is easy to crack after collision. Sometimes, although the cracks are invisible to the naked eye, the molecular structure of the surface layer of Dongling stone has been destroyed and there are dark cracks, which greatly damages its integrity and economic value.

2. Avoid dust as much as possible. If there is dust in the daily Dongling stone, it should be cleaned with a soft brush; If there is dirt or oil stain on the surface of Dongling jade, it should be scrubbed with mild soapy water and then rinsed with clear water. Do not use chemical degreasing agent solution.

3. Put away the pendant when not in use. It is best to put it in a jewelry bag or jewelry box to avoid scratches or damage. If it is high-grade jade jewelry, don't put it on the counter to avoid dust and dirt, which will affect the brightness.

4. Try to avoid contact with perfume, chemical liquid, soap and human sweat. As we all know, sweat contains salt, volatile fatty acids and urea. Dongling jade is exposed to too much sweat. If it is not cleaned immediately after wearing, it will be eroded, thus destroying the outer layer and affecting the original freshness. Especially "glass floor" jadeite and suet white jade, to avoid sweat and grease. Many people think that the more jadeite comes into contact with human body, the better it will be moistened with sweat. In fact, this is a big misunderstanding. Jade is different from ancient Dongling jade. Ancient jade needs the help of the birth process and human body temperature. The "glass floor" jade itself is crystal clear, so there is no need to use any method and there is no way to make it more transparent. If sheep fat white jade is exposed to too much sweat, it will easily turn pale yellow and not as pure white as fat.

5. Avoid long-term direct sunlight. Dongling jade should avoid sun exposure, because Dongling jade will be affected by thermal expansion, and its molecular volume will increase. Especially hibiscus jade, crystal, agate and so on. It will burst when exposed to high heat, so it is even more taboo to get close to the heat source.

6. Pendants should be wiped with clean and soft white cloth. Dyed cloth or fiber hard cloth is not recommended. Dongling jade jewelry is inlaid with diamonds, sapphires and emeralds. Only clean white cloth can be used to wipe off oil, dust, impurities, moisture or sweat, which will help to maintain and maintain the original quality.

7. Dongling Stone should maintain proper humidity. The quality of Dongling jade depends on a certain humidity, especially water bile agate and Crystal jade. During the formation of water bile agate, there was natural water in it. If the surrounding environment does not maintain a certain humidity and dryness, the natural moisture in it will easily evaporate, thus losing its artistic and economic value.

Dongling stone has a great physiological function, which can respond to the heart chakra and help the heart and lungs. Green tourmaline has been successfully used in psychotherapy, which has curative effect on cardiopulmonary problems and can increase muscle flexibility. It is most commonly used to treat the heart, relieve stress and eye diseases.

Usually worn on the left hand, the hand beads of Dongling stone can follow the direction of the cosmic cycle, input energy into the human body, and block bad energy, thus achieving the effect of protection and enhancement.