This antique piece was hand crafted sometime during the Art Deco design period ( 1920-1940 ). This lovely 18k white gold ring features a gorgeous center diamond weighing approximately 0.50 carats ( one half of one carat ). The center diamond grades approximately H in color, VS1 in clarity. The setting is skillfully sculpted and features many details including hand engraving, four bright emerald accents, two sparkling diamond accents, and subtle milgrain accents. This really is a wonderful Art Deco piece as it includes many particular design aspects the period is most cherished for. This ring is currently a size 7 1/2.