Vintage Sterling Silver Signed 925 FAS Gold Tone Rhinestone Ribbon Style Christian Cross Necklace Pendant. Really nice Vintage Cross. In good vintage condition may show minor signs of wear due to normal use. Measures approximately 3/4’s of an inch. The FSA mark appears on Sterling Silver jewelry that is marked 925. FAS stands for fused alloy silver, meaning that a piece of sterling silver jewelry is infused with an alloy. 925 means that it is 925 parts out of 1000 pure silver which puts it in the category of "sterling" which is 925 and above. Shipped with USPS First Class Mail.