Review on Stretch Magic Bead & Jewelry Cord - Strong & Stretchy, Easy to Knot - 0.8mm Diameter - Black - 25-Meter Spool - Elastic String for Beaded Jewelry Making by Doris Tran

Very easy to get confused if like me you just want to over tighten a bracelet or two if they break or stretch too much. I learned that I had to pre-stretch before the beads, and even (aggressively) they still stretched very quickly. This time I tried the black color of this brand since most of my beads are made of obsidian, tourmaline or hematite. I almost clicked the button for another brand that someone else was promoting on YouTube and I'm glad I chose this one. You can definitely see the black through the clear crystals, but that doesn't bother me. Impressed so far that it hasn't stretched a bit and I even sleep in my bracelets. The first time I didn't notice that nothing stretched after pulling, so this is my favorite so far!