Charbonnier
The Charbonnier jewelry company existed in Paris from sometime around 1930 until the end of the 1970's possibly 1980s. Charbonnier saw its height in French jewelry during the Hollywood Glam era producing a range of pieces with particular note in earrings and necklaces. The pieces produced are often marked with J then a french tower C inside of a VBS style diamond with Paris denoted below.