Art Deco blue spinel pendant necklace with marcasites marked Uncas Sterling. Featuring a beautiful, faceted, cornflower blue spinel, the pendant is richly textured; domed silver work with rows of sparkling marcasites presents interesting horizontals and verticals. (This is a classic Uncas design that was also used in rings.) It measures 1-1/2" by 5/8" including the detailed bail, and it hangs from a sterling, 18" paperclip link chain. The condition is very good with no chips or scratches.