Circa 1930. This is a beautiful Art Deco diamond platinum engagement ring. The center stone is a .50 carat transitional cut diamond with an I1 clarity and J color. Accenting the center stone are (4) four Old European cut diamonds with a .06 carat total diamond weight, I1 clarity and K-J color. The ring is hand engraved. It weighs 3.68 grams. Appraised Value: $4,200.