Welcome to my shop my dear friend. I hope you will like my jewelry, and most of my jewelry are made by myself. Please see the detail for this item: Pearl Jewelry: necklace Pearl Type: shell Pearl( neither cultured pearls nor plastic) Pearl Color: White Length: 18 inches in the pictures size: around 16 mm Note: Shell pearls and glass pearls are two different kinds of artificial imitation pearls. Their main differences lie in the materials and craftsmanship. Glass pearls, whose full name is ABS plastic imitation pearls, are a kind of synthetic resin. The hollow texture is very light, and the color lacks the agility of natural pearls. Moreover, glass pearls are easy to peel off after being worn for a period of time, and the surface paint is easy to fall off. Shell pearls are made by pressing pearl powder or polishing mother-of-pearl. Shell pearls are rich in color and can be electroplated into the desired color on the outer layer of the skin as needed. The outer layer of the shell beads is made of shell powder ground from the shells and lamination technology. The color is slightly closer to that of real pearls, and the beads are round. They are the replacement of real pearls. The weight of shell pearls are heavier than glass pearls. Shell pearls are now mostly used in mid-priced jewelry. About shipping: I will send out your order as soon as possible from China. Generally takes 10-20 days to reach. Sometimes maybe a little earlier or later Please note that the United States should try not to leave the PO box address , that will greatly delay the delivery time Hope can get for your understand & support! Happy shopping. thanks for looking & welcome to contact me with any questions!! Have a good time!