Turn your jewelry into one-of-a-kind wonders with the amethyst 12x16-15x20mm rough nugget beads Amethyst has been used as a protection stone throughout history. It is a stone made from crystalline quartz and is believed to be a stone of power. Nugget beads feature an organic shape that will add earthy style to your designs. Try them in chunky bracelets or unique necklaces. Gemstone beads are the perfect way to add natural beauty to your jewelry designs. Since gemstones are formed naturally, each bead is a unique treasure. These gorgeous gemstone beads are available by the strand, so you'll have plenty to work with.