Antique Citrine Pendant in Gold

Beautiful Natural Citrine. Signed by designer, a C and an M inside a box, also marked GAM. Unknown maker to me. Purchased in 2009 simply for the love of the design and the quality of the natural citrine. Had it appraised at the time because It wasn’t marked. Appraisal now outdated, but serves purpose of identity of stone and gold etc. Price of gold is much higher now then it was in 2009.