Bead Size	Approximate Diameter
1/0	6.5mm	The Czech seed beads we offer at this time are in sizes 11/0, 6/0 and 1/0. 11/0 seed beads are quite small. The beads are about 2.3mm in diameter and there are about 16-17 beads per inch (7 beads per cm). 11/0 beads are sold by the "hank". A hank is a small bundle of 11 to 12 strands of seed beads; each strand is about 19 inches long, for a total of about 19 feet (228 inches) of stringing distance. One hank is the equivalent of about 37 grams, for comparison to seed beads sold loose in vials or tubes. 6/0 beads are larger - 4.0-4.2mm diameter. They come about 9 beads to the inch (4 beads per cm). They have holes that are large enough to fit easily on Memory Wire or 1mm cord. They have holes that are large enough to fit easily on 1mm cord. They are also called 'E Beads'. 1/0 are the largest seed beads made - they are about 6.5mm diameter; they come about 5 beads per inch (2 per cm).
4/0	5mm
6/0	4mm
8/0	3.1mm
10/0	2.3mm
11/0	2.1mm
12/0	1.9mm
13/0	1.7mm
14/0	1.6mm
15/0	1.5mm