New vintage jade pendant necklace

New vintage jade pendant necklace Tiny dainty minimalist! Simple flat oval jade stone encased in bezel like setting. That’s it! So pretty and classic! (To me at least! 😀👍) 5x8 mm x 2 mm deep pendant 16” oval cable chain, 1 mm wide New vintage c. 1970s. Genuine B.C. Jade / Nephrite. Probably gold plate. Hallmark on chain: stylized diamond with “SN” or “NS”. No visible hallmarks on pendant. Note: the gold plate has darkened to look like rose gold or copper. No black marks. But price is reduced.