A slip-stitch bead crochet rope bracelet depicting a non-crossing complete seven-node graph on a torus (a donut shape). It is impossible to draw a complete seven-node graph on a simpler surface like a sphere without making some of the edges cross.

Beads used: two colors of size 11 Delicas and seven node beads (3mm rounds or bicones)

Thread used: heavy duty topstitching thread or size 20 crochet cotton