Bouroullec Ruutu Diamond-Shaped Vase in Copper, designed by Ronan and Erwan Bouroullec for Iittala, $295 at the Dwell Store Though made of glass, not copper, this handsomely colored vase is hand-blown into a steel mold and polished into a diamond-shaped vessel, entailing an exacting process that takes 24 hours to produce a single piece. Photo 7 of 7 in Stunning Copper Designs For the Home by Aileen Kwun

Stunning Copper Designs For the Home

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Bouroullec Ruutu Diamond-Shaped Vase in Copper, designed by Ronan and Erwan Bouroullec for Iittala, $295 at the Dwell Store

Though made of glass, not copper, this handsomely colored vase is hand-blown into a steel mold and polished into a diamond-shaped vessel, entailing an exacting process that takes 24 hours to produce a single piece.