These are some wonderfully sparkly beads. Czech size 13 seed beads are quite a bit smaller than Japanese size 13 seed beads, and have smaller holes. These beads are made for dainty detail work. They're gorgeous in picots and in bezeling stones. And these beads are Charlottes - which means after they were made, a small section of the bead was ground flat, causing flashes of lights coming off it as it moves around.
I hauled these back from the Czech Republic, and I've finally convinced myself to part with them - your lucky day!