Circa 1920s, Platinum/18k, American. This Art Deco necklace flawlessly combines crisply engraved platinum and rich yellow gold with vivid emeralds. The result is a bold architectural motif splashed with green fire! This marvelous example of period Art Deco jewelry is beautifully made and in excellent condition. The emeralds are well matched and especially fine, both in color and clarity. Noted, original clasp updated to sturdy 14k German catch, excellent match for the 18k chain.