The is an amazing piece of history, handmade platinum with engraving all the way around. This is a fine example of quality Art Deco. Inside the shank is stamped "Platinum" and has the engraving, "F.R.F to R.M.R. 5-27-25".
Platinum Art Deco .75ct Cushion Sapphire & .80tcw diamond Ring, c1920, 4.0g, size 7.75
Platinum Art Deco Diamond Ring .64ct OEC Diamond & .22tw side dia, 5.7g, s6.75
Platinum Art Deco Diamond Ring .90 OEC GIA# 2193121391, s6.75
Platinum Art Deco 1.10ct OEC Diamond Ring w/ .25tw side diamonds, c1930, s7