Vintage QTO Sterling Silver Southwest, could be native, Necklace
3 Strands of silver with Malachite beads and Pendant
Necklace is marked silver on the pendant as well as the necklace clasp
The clasp could have been added.
Necklace has the look of a bolo tie but the pendant does not move
From the internet:
Maker: Q.T. or Q.T.O. stands for Quoc Turquoise, Inc., a prominent producer of Southwestern and Navajo-style silver jewelry popular from the 1960s through the 1980s.