Art Deco rock crystal and blue chalcedony brooch in sterling silver. Three large, sparkling, clear rock crystal squares abut two round, translucent blue chalcedony stones (all tested as genuine) in a well-constructed frame. The dazzle and color of the brooch is gorgeous. One of the rock crystal stones shows signs of age, with two nibbled corners, not immediately obvious to the naked eye. It measures 2-1/8” long by 3/4” wide. It is unmarked but tested as sterling.