This antique piece was handcrafted sometime during the Art Deco design period ( 1920-1940 ). This antique ring is in pristine condition! The 18k white gold filigree is immaculate and intricately done. The center diamond measures approximately 0.33 carats ( one third of one carat ) and grades I in color, SI1 in clarity. The beautiful filigree setting features hand engraving, clean milgrain, and a subtle knife edged shank. If you love antique pieces this ring really has it all. This ring is currently a size 6.