This strand of interlocking Czech glass beads is called Snake trade beads because of its similarity to the snake vertebrae. They date back from the early 1900s. These beads have been molded and the strand is in pretty good condition. Each multicolor strand of beads includes many harder to find colors including green, turquoise, coral, black, and yellow. Get many colors in a single strand! Beads measure approximately 7 x 9mm. Each strand is unique and may vary slightly from strand pictured. 27 inches of beads. Long enough to be worn as is or used in your unique bead creations.