Clear glass cabochons diameter is 12 mm (0.47 inch) and about 4 mm of thickness | Weight: approx. 0.7g each, 140g in total; Pack of 200, can meet your various needs | Suitable for earrings, necklaces, bracelet, cameo pendants, photo jewelry, DIY crafts, fridge magnet, key chain, brooch, hair clip, bookmark and etc | Good for handmade crafts and earring necklace jewelry making. Also, it’s a memorable present for your family and friends | Glass cabochon with non-calibrated round and flat-back design has a slight magnifying effect