Dichroic Glass and Faceted Stone 925 Sterling Silver Pendant

Pre-owned Dichroic Glass and Faceted Stone 925 Sterling Silver Pendant I'm not sure which stones are used or if they are real. The stones are light blue, light green, and purple/blue. The stones have some small scratches. Signed 925 Silver is tarnished or oxidized and scratched. I was not able to remove the tarnish or oxidation, you might not be able to remove it either. Comes from a smoke free home