Vintage NOS 1970's Sterling Silver & Genuine Marquise Nephrite Jade Ladies Ring

Brand new old stock item from the 1970's (NOS)
Acquired from a jeweler's estate
Item has been polished, cleaned and rhodium-plated
Marked STER on shank
Crafted of solid Sterling Silver 925
Ring weighs 4.40 grams
Features a prong-set, marquise Nephrite Jade gemstone (measures 15mm x 7mm)
Finger size 6 1/2
Gift boxed