i think you could make this with tunisian. when it gets the the split, you could keep working half the stitches until both halves are long enough and then start stitching across the entire piece again at the other end.
BEFORE - see the Walla Walla lamp pin on this board - easily convert to this! AFTER Bohemian beaded lamp DIY. Part old jewlery, part old lamp. What if you used ribbon, or junk jewlery also in one tone, like 'pearls' or 'jade' type jewlery!