https://youtu.be/NIw3xSsVj9Q Length: 40cm Package size: 1.15*0.9cm High quality and beautiful Larger Australian crystal opal Full of green and colorful The upper part of the stone will flash beautiful colorful light (appeared by different light sources) Translucent stones faintly visible traces of a white ore in the lower left corner of the bottom Selected single gemstone production Not sold Maintenance related matters: This is a stable quality Australian protein. It is usually stored in a zippered bag and placed in a cool place where it is not exposed to the sun. Use a mild soap and other detergent. After washing, wrap it in a soft tissue. The opal is a delicate and precious gemstone. It has a low hardness and is easily cracked when it collides. It is also resistant to chemicals. Please do not use silver-washed water in the stone table. Always avoid high temperature environment and acid and alkali chemicals.