These are dichroic glass nuggets. The bottom is flat. They are dichroic, so they sparkle and are very beautiful ✨ High-quality dichroic glass is used. Please refer to the photos for size. 24 pieces. As these are handmade by an amateur, some may be irregular. Please refrain from purchasing if you are looking for perfection. The color image may differ depending on the lighting and how the light hits it. Please understand. If you purchase multiple items, I will offer a 100 yen discount on the second item and subsequent items. Thank you for your understanding. Fusing glass Dichroic glass Dichroic nuggets Glass nuggets Glass cabochons Handmade Glass Accessory materials Glass cabochons Handmade Glass Accessory materials Stained glass 1400