Antique Art Deco Platinum Sapphire Diamond Bar Pin Brooch 2.80ctw GIA No Heat

An original antique Art Deco bar pin handcrafted in platinum, showcasing timeless geometry and vivid color contrast. The piece is set with approximately 1.40 carats total weight of original old-cut natural sapphires displaying rich royal blue hues, complemented by approximately 1.40 carats total weight of old mine cut diamonds graded G to I color and VS1–SI1 clarity. Each stone is original to the period and finely hand-set. The brooch is accompanied by an original GIA laboratory report confirming that the sapphires show no evidence of heat treatment.