... ) 93% quartz and 7% resin 2) Incredibly hardness natural rough crystal quartz tile 2.Size:10-30mm 3.MOQ:10kgs 4 ... tumble stone Other optional gemstone: Over one hundred kinds, like red agate, Indian agate, turquoise, semi-precious stone, rose quartz, amethyst ... 's eye, picture jasper, green piebald stone, gold sand stone, red quartz, spotted stone, purple fluorite, white turquoise and alabaster, etc ...