I take it you inherited these or bought them somewhere after market. My Epiphany pieces say DQ CZ 925 China. There is some funny three line symbol, but not a real letter. Could the R be on a piece of sterling native American jewelry, meaning Relios, which is a Carolyn Pollack mark? The other initials you have draw a blank for me but perhaps someone else can remember them. Do you know if you have sterling or gold or fashion pieces? Be aware there is lots of stuff on Ebay that says QVC that never saw the light of a QVC warehouse.