This ring by famed New York manufacturer Oscar Heyman is designed as a glittering starburst in emeralds and diamonds. Measuring 13/16" across the round cluster top, the 18-karat (as stamped inside the shank) yellow gold, three-wire shank tapers from 3/8" wide at the shoulders to 2 mm. at the base. The ring is centered by a very fine round, mixed cut emerald weighing about 0.68 carat, mounted in a yellow gold setting. It is surrounded by 10 round brilliant cut diamonds prong-set in platinum (again, as stamped), then steps down to eight marquise brilliant cut diamonds; and finally, eight marquise mixed cut emeralds in yellow gold.
The diamonds weigh about 2.60 carats total and have approximate quality of G-H color and VS clarity. The side emeralds weigh about 1.50 carats total, and, like the center emerald, very fine. As is true of almost all emeralds, it can be assumed that these have been treated by oil or other substance. Inside the shank is stamped the trademark for Oscar Heyman and a serial number, 96999. The finger size is 5 1/4. The total item weighs 5.9 pennyweights (9.1 grams).
This ring is an expression of the clean straightforward cluster ring that was popular from the 1960s until about 1990, executed as beautifully as possible by a prestigious American jewelry house.