French Jet Flat Stone Rectangle 13x5mm

These French Jet or crepe rectangle 13x5mm facetted stones are 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.
They have the makers mark on the back. Like all glass, it will be colder to the touch and heavier than Whitby jet or vulcanite.