Very delicate 10K yellow gold pin set with a collet-set square-cut synthetic ruby. The linear design and the geometric shape of the stone show the beginnings of Art Deco influence. Similarly, the use of a synthetic stone is common in jewelry of the period. Even makers such as Cartier and Van Cleef & Arpel used synthetics. Marked "10K".
Origin: America, circa 1935. Condition: excellent, except for a chip on one corner of the stone; all original. Size: 3/8" x 1-1/16".