Japanese Toho 15/o (1.3mm) Seed Beads. Color: Transparent Rainbow Black Diamond. Quantity: 2.5 Inch Tube. Approximately 7-8 Grams Per Tube. 15/o (1.3mm) seed beads in color "Transparent Rainbow Black Diamond" (Color Code: 176). Transparent Black Diamond color beads with a Rainbow (AB) finish. Toho's precision-sized round seed beads are manufactured with a slightly larger hole than other seed beads, making them the bead of choice for advanced bead weaving techniques that require multiple passes of thread through each bead. Toho translates to "Eastern Treasure" in English. Japanese seed beads are favored for their high quality, precision crafting, and uniformity in size. Toho beads come in a vast array of colors and finishes that are sure to inspire your bead weaving projects. Measurements: 15/0 Size - Approximately 1.5mm in diameter, hole fits up to 22 gauge wire and stringing material (.025 inch). Quantity: 1 Tube (Each 2.5 inch tube contains between 7 to 8 grams of bead