Vintage Turquoise and Copper Bead Necklace

Vintage hand strung turquoise and copper bead necklace. It is 36 3/4" long and has a hand made silver toggle clasp that tests not sterling. Beads are  12.5mm and 9.3mm in diameter. The turquoise is all different colors of blue and green that is rich with matrix. The free-form copper beads separate the turquoise beads. Copper has a nice warm patina. Necklace weighs 202 grams. Because it is so long and has a toggle clasp it can be worn doubled-up.