We hand mix and dye our concrete then we swirl and pour that into our skull molds. While we try to stay consistent with our pour the organic flow of the concrete dictates the design. No two are alike. We add a coat of sealant for the color to pop and to protect the skull if you choose to leave it outside. They measure approximately 1.5" x 1.5" and come shipped in our signature cotton drawstring bag, ready for gift giving. Select from natural, solid black, solid grey, black marbled, blue marbled, green marbled, terracotta marbled, gold (painted) and silver (painted). We can also do some custom colors, if interested please message us.