A Polki necklace is a traditional Indian jewelry piece featuring uncut, natural diamonds set in gold, typically surrounded by intricate designs. Polki diamonds are untreated and retain their natural, rustic look, giving the necklace a vintage and regal appearance. These necklaces are often embellished with pearls, gemstones, and enamel work, making them a popular choice for weddings and festive occasions due to their timeless elegance and rich cultural heritage.