This is a stunning pendant necklace from an estate collection. The pendant is an art deco revival style, featuring ornate sterling silver filigree, accented with a marquise-cut green peridot gemstone. The gemstone was tested with a Presidium Gem Tester II. The pendant is stamped 925 (sterling silver), but there is no maker's mark that I can find. The pendant measures 1.5" (including the bail) by 0.7". The peridot gemstone measures 10x5mm. The chain is modern. It's sterling silver, marked 925, and 18" long. It's in excellent condition, and it will come in a gift box.