10 x 6mm cubes with diagonal hole in Blue (vintage)

These 10 vintage- Blue glass cubes were made in the Czech Republic. They are approximately 6mm and the hole runs diagonally from corner to corner. Each bead is slightly different in size and shape.The beads are in a good condition for their age although they may have some imperfections due to the way they were made. I have not cleaned these beads as this adds to the character and history of the beads.