Length: 40cm + 5cm extension chain Package size: without side decoration, main stone package 1.6 * 0.9cm Very transparent dark blue water drop opal Its color is very gentle and soft The inside of the gem is covered with a white natural asbestos Colorful and comfortable item Deliberately making short short chain models The decoration next to it is visually with a little neck ring effect Simple and elegant Selected single gems Sold out Maintenance related matters: This is a stable quality Australian protein. Usually, you only need to store it in a shaded bag and store it in a cool place out of the sun. You can use mild detergents such as soap. After washing, please use a soft paper towel to dry it. Opal is a relatively delicate precious stone. It is easy to crack when it is low in hardness and is not resistant to chemicals. Please do not use silver washing water on the part of the stone table. Usually, please avoid high temperature environment and acid and alkali chemicals.