Standard Seed Beads are opaque glass beads have a nominal diameter of 3.6 mm, which makes them almost as thick as most glass mosaic tile. Sold in bags of 100 grams (~3.5 oz) , which is about 1200+ beads. Use these to make lines and details in your mosaic by gluing them on their sides. You may need to build them up slightly with a little extra glue, but they work very well. Click on a color to see the full product description.