Known for its use of Swarovski crystals and colored stones, as well as superior craftsmanship and attention to detail, Eisenberg & Sons was one of the most highly regarded costume jewelry manufacturers in the 1930s and '40s. The company was famous for its replicas of 18th-century fine jewelry, which appeared authentic right down to the pewter-colored metal. Eisenberg also produced stunning figurals, often set in sterling silver.

Today, collectors can recognize an authentic piece of vintage Eisenberg jewelry by its mark. The words "Eisenberg Original" were used from roughly 1935 to 1945, while just plain "Eisenberg" or "Eisenberg Ice" was used from about 1945 to 1950's. To make matters more complicated, silver pieces made from 1943 to 1948 were called "Eisenberg Sterling" and some Eisenberg pieces created between 1952 and 1970 have no trademark stamp at all.

This fabulous Eisenberg Original oval brooch, circa mid 1930's-mid 1940's, is the ultimate in size and design for the Eisenberg company. Large and rather bold is will demand attention and respect as an exceptional vintage brooch. The center holds an oval, faux onyx set measuring 2" in length and 7/8" in width, which is surrounded by three to four rows of round, oval, baguette and marquise cut diamond rhinestones of various sizes. Some of the large, foiled sets are mounted open-back in the heavy, reticulated, pot metal formed brooch, which indicates a mid-1930's manufacturing period. The sets are not as bright as when new, but they still present a lovely sparkle. The brooch measures 4 1/4" in length and 2 1/4" in width. Stamped within a cartouche "Eisenberg Original". There are no missing sets or metal damage, just age related wear. Wonderful piece for an important collection.