This human brain pendant is carefully researched to be both an attractive accessory, and a useful portable learning aid. Great for anyone studying or working in the fields pf neurology and psychology, as well as anyone who appreciates this organ that is one of nature’s great marvels! Cast in genuine pewter with an antiqued finish that accentuates its detail. Comes with an adjustable length 2mm black leather necklace cord. Weight: 15.0 Grams Dimensions: 2.4 cm wide x 2.5 cm high (without loop) x 0.9 cm deep