This is not your average Retro ring. In 14-karat (as stamped) yellow gold, it presents blue zircons, which many people have heard of but associate with "fake," because of the popular diamond imitation cubic zirconia. In fact, blue zircon has been used in jewelry at least as long ago as the Victorian period, and it became increasingly important through the 1940s. It is almost always heat-treated from the natural-occurring brown. Its rainbow of spectral colors is somewhat muted by the darker tone of its hue (think aquamarine on steroids). This fire is very hard to show in photography, but you will have no trouble seeing it blazing away in this ring from the 1940s. The circular cluster top is prong-set around the perimeter with six round blue zircons weighing about 5.00 carats total, and in the center with another weighing about 3.50 carats. There are curls separating the side stones, each of which has a line of black enamel. Of cast construction, which was revived as a jewelry manufacturing technique after hundreds of years of disuse, this piece is in excellent vintage condition, with only a few small pits and cavities on a few of the side stones. The ring is also stamped with a trademark, apparently that for Untermeyer-Robbins & Co., a New York City manufacturer that featured blue zircon in the first half of the Twentieth Century.
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