Jade is believed to be able to help a person in contact with it . Jade cool feeling , is said to enhance and purify the mind , calm the mind and induce a meditative state . It is also considered jade frequent operation may cause the stone to become more beautiful sheen. According to the Chinese proverb , "Jade is cool , because it is clear from the nature of the mountain ." Science says , jade is a cool feeling , because it is a non- conductor . Many Chinese people believe that a jade stone eventually become part of the life of its owner . Jade is believed to be based on their share of the Aura to change the color . When he or she has been removed or depression may be a darker shade of jade . If we 're lucky, the stone may be lighter hue. It is also believed that when a jade piece cracks or breaks , it has been shielded the holders of evil Product Details - Shape / Type : Ring / Charm - Material / Green Agate - Standard international shipping ( 10-18 days for delivery ) - Level / Type : 100 A / A type / A level - Origin: China - Refractive index: 1.66 - 1.67 - Specific gravity: 3.33 - 3.34 - Colors and varieties: green, cold varieties - Weight (g / ct ) : ~ 14.9 g / 74.3 kt - Luster: vitreous luster - Surface texture: medium grain - Condition: Excellent Freight Policy Shipping / handle fee is based on chargeable weight ( front ) fee , chargeable weight is the speed of the items listed above described , S / H in the table below Different courier mail service in the U.S., Canada, UK, Australia , S / H fee and 4-8 days to other counties : EMS Standard international shipping : Worldwide 10-18 days 2kg less packaging. Packaging costs S / H of more than 200 kilograms , more than the United States and various other countries Sign up ( free online tracking number ) All of our package will be shipped via registered mail with online tracking number, I'm sorry , we do not send packages unregistered . 100% Satisfaction Guaranteed If you are not completely satisfied with our products , please send us an email and and get a full refund from seven days from the date of your return . No restocking fee will be charged .