Thank you for viewing. This is a natural stone, also known as Kesei Stone (African Blue Opal). The milky white parts with a bluish tint have a slight transparency. 【Kesei Stone】 Kesei Stone is a stone composed of a mixture of multiple minerals such as blue opal, calcite, kaolinite, clinozoisite, magnetite, and plagioclase. Various colors and patterns can be seen depending on the mixed stones. 【Size】Beads are approximately 10.5mm, with an inner circumference of approximately 16cm. Please allow for some error due to amateur measurements. You might be able to disassemble it and use it for handmade materials. I will give you the item in the image. Please refrain from purchasing if you are sensitive to this, as it has been stored at home. The stone material is made overseas. There may be inclusions, cracks, fine scratches, chips, dents, and distortions. The colors may also differ from the actual product depending on your device. Recycled materials may be used for packaging. It will be shipped by regular mail, etc., with air-cushion packaging. There is no guarantee in case of non-arrival. If you wish to have a shipping method with a tracking number, please consult with me in advance. If you wish to change to Mercari delivery, the difference will be an additional ¥100. Please understand and agree to the above before purchasing. Thank you. #yuyuki_naturalstone #yuyuki_naturalstone_accessories #yuyuki_naturalstone_bracelets #handmade #naturalstone #blueopal #africanblueopal #bracelet #powerstone #naturalstonebeads #kesestone #conglomerate