Dusky Onyx 12" x 24" Polished from Garden State Tile Rectified
La Marca 24 x 48 in. Onyx Nuvolato Polished Rectified Glazed Porcelain
Daltile Kemperstone Onyx Gray Polished 12 in. x 24 in. Glazed Porcelain Stone Look Floor and Wall Tile (17.10 sq. ft. / Case) KM011224AHD1LF - The Home Depot
Marble Systems ELEGANTE PORCELAIN COLLECTION Carrara Onyx Grey 12-in x 24-in Polished Natural Stone Marble Scale Marble Look Floor and Wall Tile (16-sq. ft/ Carton) in the Tile department at Lowes.com