Guren Jiang Pei-yu of the United States, Gold has a price but jade is priceless . Jade buried underground thousands of New Year is a million years , jade contains large amounts of mineral elements, so often said that people raise Yu Yu dependents , if the human body can nourish a good long-term wear jade jade , jade head is the refractive index of the degree will be more to better, more light. If the human body is not good long-term wear jade , jade mineral elements are slowly absorbed by the body to achieve health effects , such as Ms. jade bracelet usually with his left hand , as good for the heart . Reputation of China since ancient times " Jade Country," the ancients jade as a treasure, as Jane decorated with wear . Ancient medical books called " Jade is a beautiful stone , sweet nature , non-toxic ," adding that jade is the most abundant human keeper strength substances . Think suck with jade , with saliva and its synergies , " thirst, in addition to the heat in the stomach . Of the flat tired of melancholy , AIDS and lung, larynx Run sound , keep the hair . "Thus not only as jade jewelry , ornaments , decorative purposes , but also for health fitness . Jade 's health mechanism has been confirmed by modern science. According to chemical analysis, jade contains many trace elements beneficial to human body , such as zinc , magnesium, iron, copper , selenium , chromium, manganese, cobalt , wearing jade can trace elements absorbed by human skin, activate cells and tissues , improve human immune function. Therefore, the Chinese say, "Some medicine can not cure the disease , but often wear jade cure disease " , the truth lies in this . If the long-term wear jade bracelet massage benign , passive addition to blurred vision not only of the disease , but also build strength, raise the spirit . Jade long worn on the body , jade and human contact friction , trace elements will enter the human body , balancing the body's levels of trace elements . Cases of hair zinc can activate insulin to regulate energy metabolism, maintain the body's immune function, promote children's mental development, has anti-cancer , anti- distortion , anti-aging effects. Manganese can fight free radical damage caused by the human body , involved in the synthesis of proteins , vitamins , and promote blood circulation, accelerate metabolism, anti-aging and prevent Alzheimer's disease , osteoporosis, atherosclerosis and so on. Scientific Instruments Testing: Jade also has a special " photoelectric effect" , applying pressure , cutting and grinding process of finishing this effect will focus accumulator to form a " solenoid pilot broadcast " and emit a body can be absorb far infrared waves , and thus induce a strong resonance of water molecules in the human body cells , so that from a light massage , the role of microcirculation system , so that the body to improve blood circulation and metabolism , activation of cells and tissues , regulating the precise meridian operation , enhance rapid response, improve the body's immune function. Product Details - Shape / Type : Pendant / Charm - Material / Gemstone : Green Emerald - Shipping / Handling Standard international shipping ( 10-18 days for delivery ) - Level / Type : 100% A -level class A / A genotype / - Origin: China - Refractive index: 1.66 - 1.69 - Specific gravity: 3.33 - 3.34 - Colors and varieties: green, cold varieties - Size : 50mm in diameter and 6 mm thick - Weight (g / CT): ~ 46 g / 230 kt - Grassy Gloss: Gloss - Surface texture: COFCO - Condition: Excellent - Accessories: adjustable rope necklace Freight Policy: Standard international shipping 10-18 days to send to you Yes, we provide a tracking number , so you can keep track of all information . Registered mail All our packages with online tracking number will be shipped by registered mail Thank you for reading , if you have any questions , please contact me.