Retro Esemco 10k Yellow Gold and Synthetic Ruby Ring

A striking expression of mid-century glamour, this Retro-era Esemco ring captures the bold optimism and distinctive artistry of the 1940s. Crafted in warm 10K yellow gold, its vivid synthetic ruby evokes the rich crimson hues cherished in vintage jewelry, creating a captivating contrast that reflects the era’s love of sculptural forms and dramatic color.

The ESEMCO name carries its own chapter of American jewelry history. Associated with Shiman-Miller Manufacturing Company, founded in New York in 1905 by Abraham Shiman and Simon Miller, the trademark became known for American-made gold jewelry. The company later operated as Shiman Manufacturing, producing a variety of jewelry designs that reflected the changing tastes of the early and mid-twentieth century. Its pieces ranged from delicate filigree creations to bold rings and gemstone-set treasures, making ESEMCO a recognizable name among vintage jewelry collectors today.

Dating to circa 1940, this ring belongs to the Retro period, when jewelry design embraced confident silhouettes and luxurious gold tones against the backdrop of a world transformed by war. Synthetic gemstones, made possible by advances in gem-growing technology, offered jewelers a way to achieve vibrant color and striking beauty. The fiery ruby-red centerpiece and golden setting embody the era’s distinctive blend of ingenuity, elegance, and accessible luxury.

A beautiful example of ESEMCO’s place in American jewelry-making history, this vintage treasure carries nearly a century of style and character, a timeless keepsake ready to begin its next chapter.

• Circa 1940

• Stamped “10k” with Esemco maker's mark, tests 10k yellow gold

• One oval-shaped synthetic ruby weighing approximately 4.45 carats

• Size 6 ½, resizable 

• Estimated gross weight: 3.9 grams

• Good vintage condition, wear in the form of minor scratches, light wear on gemstone facets, visible patina, and wear appropriate with age.