Designed and patented by Adolf Katz for Coro in 1944, this jelly belly scarab beetle dress clip was part of a duette set advertised in Harper's Bazaar Magazine in March of 1944 (See 2nd photo). Patent drawing is also shown, patent # 137,511 (3rd photo).
The jelly belly three-dimensional (3D) lucite body, inset with clear round charon rhinestones and a groove cut down its center, is prong set in rose gold plated sterling silver. It has six jointed legs, two antennae, and its head is pave set with clear rhinestones and its eyes are two high domed emerald glass cabochons. It measures 1.25" inches tall X 1.5" inches wide. Dress clip works very well and it is hallmarked "STERLING". This beauty is in pretty pristine, excellent condition - no apparent wear to the gold plating, and no scratches (other than micro ones) on the lucite. Wow!
This beetle clip is referenced on page 205 of Brunialti's book, 'American Costume Jewelry, Art & Industry, 1935-1950', rated 4 out of 5 stars for quality and rarity. According to the book, this piece is one of the first examples of rhinestone-studded lucite, which is a trademark of Coro's Jelly Bellies. Also featured in Pamela Y. Wiggins' most recent book, "Warman's Costume Jewelry", on page 212 (single clip valued at $100-$150).