Mountain Gems stands out as the most opulent and lavish kit on the market. With an abundant supply, it offers ample materials for a wide range of designs and jewelry creations.Each kind of clay disc bead is sealed separately in a plastic bag. Thus, these ceramic vinyl disc beads would be mixed up neither in transportation nor in daily use. Plus, the grid plastic box keeps beads in clear distinction and away from dust/moisture. The elastic string is coiled in a disc instead of in a roll. All these are in order and convenient to use/store.These are made of transparent acrylic and looks cute. These beads are dyed with high quality colour which doesn't become dull upon washing and exposure to sun. please keep the beads and other accessories away from water. Please choose the appropriate length to make your necklace/bracelet to avoid being too tight or too loose.This 6mm flat round clay beads for necklace making is an upgraded version: colors-from 10 to 18; elastic strings-from 16.5 to 33 feet. Be more creative with the upgraded jewelry-making kit.