18K Adler "1990 Serail" Five Band Ring, Five stacking bands that are connected with a single thick back shank, marked "1990 Serail" on outer shank and "750 Adler" on inner shank. The bands are set with a combination of diamonds, rubies, emeralds and sapphires with the diamonds being bead set and the other precious stones bezel set. The weight is 19.8 grams and approximate ring size 6-7. Wonderful estate condition.