Thank you for viewing. This set will be shipped via standard mail. This item is made by arranging four nuggets, which were initially created with a burner, and then firing them in an electric kiln. Some of the glass appears to change color under natural light and fluorescent light. Since they are fired in a group of four, some of the nuggets are not perfectly round. These are made by arranging pre-made nuggets, so some nuggets may have cut marks, bubbles, or scratches. Please refrain from purchasing if you are concerned about these imperfections. As it is glass, it may break with a 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 10mm to 11mm wide. The back of the nuggets is measured. If you have any questions or concerns, please feel free to ask. 1500 yen #glass #electric kiln #handmade #nugget #earrings