Approximately 30 grams in a 6 inch tube. "Experience the opulence of jet-black ink with our 15/0 Japanese Opaque Black - 401. Each 6 inch tube contains approximately 30 grams of the finest, most concentrated pigment, perfect for your most luxurious artistic creations."
I like the beads and am anxious to experiment with these small beads as I usually use 11/0
