Vtg Mid-Century Modernist Sterling Silver Lapis Lazuli Designer Pendant 2.8”

Vintage Mid-Century Modernist Sterling Silver Lapis Lazuli Designer Pendant 2.8” Vintage sterling silver and lapis pendant, the bottom part can swing back and forth like a pendulum, geometric shapes triangle square arrow with triangle of lapis lazuli. Stamped sterling DR (I believe this is a NA Navajo piece.) 2.8” length / 17.3 grams weight