French Jet Square 12mm
French Jet or crepe stone is black glass or black crystal. (not fossilized wood). Manufactured from the late 1800s in the former Czechoslovakia using hand cutting techniques these beads are flat on one side and cut on the other with 2 holes drilled through them.
They are extremely versatile.
mount them on filigree stampings,
sew them onto garments and
string them to create unique bracelets and chokers.
Note: they have either the makers mark on the back or some have decorative etchings which makes them reversible. Like all glass, it will be colder to the touch and heavier than Whitby jet or vulcanite.