Vintage NOS 1970's Sterling Silver Pentagon Spinner Pendant with Genuine 10mm Mookaite Jasper Bead

Vintage 1970's NOS (new old stock) item acquired from a jeweler's estate
Crafted of solid sterling silver .925
Pendant weighs 1.80 grams
Measures 1.10" (28mm) top to bottom, including bail and 0.58" (15mm) left to right
Genuine 10mm mookaite jasper bead
Marked 925 on the bail