black stones can be used. Carved mother of pearl Smiley Sugar Skulls set in solid sterling silver.Hand carved by Ruben Xolotl Viramontes signed and dated. Garnet stone looking like large gage ear plugs in the Aztec style. The sides will be dripping in carved hearts as seen in my other wedding ring design. the Man's ring top dimension is about 18mm by 15mm. the ladies top measurement is about 16mm by 14mm. Heavy silver work made to last for ever.