YOU ARE BIDDING ON A ANTIQUE VERY RARE PRE COLUMBIAN HAND CARVED JADE BEADS AND WHITE COLOR METAL BEADS AND BEAUTIFUL HAND MADE SNAG DESIGN PENDANT, IN MY OPINION IT IS SILVER, BUT I'M NAT AGREE BECAUSE I DON'T TESTED, BECAUSE I DON'T HAVE A TASTING. 
IT IS ANTIQUE EXCELLENT CONDITION AND APPROX SIZE IS;    
NECKLACE 16"L
 PENDANT 2.40"H    0.90"W
JADE BEADS APPROX;     0.95" x 0.5" x 0.30".

                                                             GOOD LUCK AND HAPPY BIDDING.