More to explore:
"Red X" by John Mason, 1966, Stoneware
啓之HINT7・Izutsu Hiroyuki, via Flickr.
Lush red Georgia O'Keefe rose.
This was painted by Harold Davis. He does name her as an inspiration for this work. I see this painting all over Pinned as an O'Keeffe.
ralph nuara - blood red mug
franz erhard walther
Handmade White and Red Stripe Majolica Bowl by AtwaterCeramics on Etsy Olia Lamar
Abstract - Rothko