This necklace made of 100 % natural Jade Green Ock for fine , delicate texture , transparency is high, the color green , rounded and full of crystal dolphin Ock link up , the dollars rolling in luck , simple fashion, during wear jade and human long-term exposure , oil , sweat the infiltration of jade , jade trace elements contained in the same time and also dissolved as grease, sweat , ( or directly ) to be absorbed by the skin . Therefore, long-term wear jade products , people's skin will be red , smooth, and also because of infiltration of fat jade and more transparent, shiny . It is often said that " people raise jade, jade dependents ." Product Details - Shape / Type : Necklace / green jade - Material / Gemstone : Emerald / Emerald - Standard international shipping ( 10-18 days for delivery ) - Level / Type: 100 / 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 - Size: 50cm around / plant 8mm/62 Chu Wai - Luster: vitreous luster - Surface texture: medium-grained , It is listed : 10-18 days to provide you with standard international shipping Yes, we provide a tracking number , so you can keep track of all information . Registered Mail Thank you for reading , if you have any questions , When you need a special gift , this is just a small step , I believe this is a good start www.etsy. COM / shop / jadejadeite Thank you so much ! Blessing !