Pandahall 20pcs 25mm Dome Transparent Glass Cabochons Clear Imitation Gemstone Round Cameo Pendant Settings Jewelry Making Transparent Clear Glass Magnifying Cabochons Flat Back Jewelry Cameo Settings Making Size: about 25mm in diameter, 4.5mm(Range: 4~5mm) thick. You can sticking on a pattern, cover on the glass, for long-lasting wear. Use these cabochons with any flat components on a chain or a cord to be a decent necklace, bracelet, or ring base embellishment. Note: Small objects, please keep it away from children.