10/DGF.....what does it stand for?

[magicwand]

Found a pendant that is stamped 10/DGF. My ATPRO vdi'd it at 81...82...83.Could this be gold plated?......what does 10/DGF stand for?

[CTDirtFisher]

10K &quot:grin:shocked04:uble Gold Filled which is different than gold plating because it is heat bonded to a flat sheet of core metal such as copper then stamped into the shape