Thank you for viewing! This set will be shipped via standard mail. This item is made by arranging 2 to 4 nuggets, which were initially created using a burner, and then firing them in an electric kiln. Some of the glass appears to change color under natural light versus fluorescent light. Since they are fired with 2 to 4 nuggets arranged together, some nuggets are not perfectly round. These are made by arranging pre-made nuggets, so some nuggets that use silver foil may have surface discoloration. Please refrain from purchasing if you are concerned about this. As it is glass, it may break with strong impact. Since it has been fired, there may be marks on the back. Some items may also contain bubbles. Please refer to the photos in the second and third images for the size. The size is approximately 9mm to 10mm wide and 9mm to 10mm long. The back of the nugget is measured. If you have any questions or don't understand anything, please feel free to ask. 1550 yen #glass #electric kiln #handmade #nugget #earrings