Czech GemDuo Glass Beads The two holes are 4mm apart (center to center), and will accommodate wire or thread up to 20 gauge (0.812mm) thick Measurements: 8mm long and 5mm wide with two parallel holes holes spaced 4mm apart Quantity: 10 Grams - Approximately 68 - 75 beads, depending on the bead finish. Color: Jet Blue Iris. From the makers of the Superduo bead, Matubo brings you the GemDUO, an 8x5mm, 2 hole, Diamond shaped Czech glass bead. The GemDUO’s shape and sharp lines allow for the beads to come closer together leaving almost no gaps or spaces. the parallel holes are perfect for bead weaving and multiple thread passes and pairs well with other 2-hole beads. Sold in 10 grams - approximately 68-75 beads. Measures 8mm long and 5mm wide with two parallel holes holes spaced 4mm apart. Nestle them together to create a textured mosaic pattern and pair with other 2-hole Czech glass beads for a variety of shapes and colors. The two holes are 4mm apart (center to center), and will accommodate wire or thread up to 20 gauge (0.812mm) thick. Color: Jet Blue Iris