This lovely adjustable necklace features brilliant aurora borealis chatons alternating with sapphire blue stones in a silver tone setting. Additional embellishments include small crystal clear rhinestones and silver tone leaves. This measures 17 1/2 inches long and is in excellent condition. It is signed on the fish hook clasp. The company, Karu Arke, was founded by Messrs.' Kaufman and Ruderman and was in business for about 30 years, between the 1940's to 1970's. This necklace likely dates to the mid to later 1950's.