What is the value of a three string natural pearl necklace from the 1920?

The value of a three-string natural pearl necklace from the 1920s can vary significantly based on factors such as the quality, size, luster, and origin of the pearls, as well as the craftsmanship of the necklace itself. Generally, natural pearls are rare and can fetch high prices, often ranging from several thousand to tens of thousands of dollars. Unique historical provenance can also enhance its value. For an accurate appraisal, it is advisable to consult with a qualified gemologist or antique jewelry expert.