Swarovski Peridot Silver Pendant

Just looked after having it all my life. It’s never been cleaned and it’s SO brilliant itscrazy! 1/3ct made into round beads are why it catches EVERY angle with serious BLING. The piece is numbered and stamped as well as Logo Swan and purity marks on every gem. I haven’t researched but the crystals are brighter than diamonds. its two round ROWS of brilliant crystals around the peridot it’s fabulous cut and it’s an older piece. Or custom with those materials. It’s marked all over in back.