Polished aluminum stands showcase slices of semiprecious stone as they anchor books on the shelf or table. Formed in ancient lava streams in the mountains of Brazil, the druzy stones combine agate, amethyst, and crystal in layers of luminous color. Artisans polish each one by hand, leaving the stony edge untouched. Natural agate slices, cut and hand polished in Brazil. Set on polished aluminum stands with rubber feet. Rubber feet protect tabletops and help them anchor upright books. Products of nature, each stone is unique in size and shape. Approx. 5" wide x 3" deep x 5" high. Made in the USA with imported materials.