Soft copper wire 18 gauge ( wire diameter 1mm ) : 35cm ( about 14 inch) 26 gauge ( wire diameter 0.4mm ) : 2 strands, each 70cm ( about 27 inch) ...

This is a video I remade from the video 6 years ago bracelets with colorful crystal - DIY wire jewelry 209 : <a href=" You can change the wire length and diameter to suit your materials and purposes ...

Finally, there is a smoothed "rainbow" scheme. It is often better to use a limited range of these colors. Variants are already defined to that end. If the lowest data value occurs often, start at ...