Lambert Bros. Sapphire & Diamond Art Deco Brooch 1.5''x1.25. Includes an Old European Cut diamonds of 1.66ct, clarity VS-1 color K. Also an Old European Cut diamond of 1.05ct and a .15ct diamond, average clarity VS-2 color G. Flanked by (20) single and Old European Cut diamonds of .56ctw. There are (10) trapezoidal and rectangular step cut dark blue sapphire corundum that taper in size. It weighs 17.5 grams. Marked ''Lambert Bros.'' on pin stem. Similar to a fur clip. Comes with 2018 appraisal from Northwest Gemological Laboratory.