Thank you for looking. These are dichroic glass (expansion coefficient 90 degrees) nuggets. These are large nuggets with a diameter of approximately 1.9 to 2.19 cm. I think they can be used in various ways, such as making hair ties or pendants. Some of them contain small bubbles inside. Please refrain from purchasing if you are concerned about this. If you would like multiple items, please let me know in advance. Depending on the quantity, I will offer a discount and relist them together.