Small glass grains are used to create a pattern and fired in an electric kiln. ↓ This piece was flipped over after cooling and fired again. The surface is plump and glossy... the back is flat. No marks from the release paper remain on the back, It was beautifully fired. The last photo also shows the back. There are no holes. The color of the glass is captured as accurately as possible in natural light, but the color and brightness may vary slightly depending on the natural environment during photography. Also, depending on the glass, the color may change under fluorescent light, or appear darker. It may also look different depending on the computer you are using. Please understand this before purchasing. Thank you very much m(_ _)m You can purchase immediately without a comment, but please read the profile before purchasing (*^^*) Thank you very much m(_ _)m Glass beads. Glass nuggets Nuggets Sea glass art Accessories Mosaic Stained glass Glass material Glass materials Glass crafts Dome nuggets