Dating to the late 1980s or so and designed in an Art Deco Revival manner, here's a really stunning sterling silver (hallmarked CFJ on a separate rectangular tag; 925 on the catch end) link necklace set with a myriad of black grey faceted marcasites. Fold over clasp closure.
Condition is excellent with no problems I can spot. The necklace is a 16-1/2" wearable length; width of the X links is 5/16". Weight is 41.1 grams. Absolutely gorgeous!