Take this as a learning.
when you find Avon or any fake jewelry (outside your yard) a park, beach etc. that's a good clue that there is more around. I found and Avon ring at a park in February, by the end of April I had three different gold items out of that same park. I went back several times - probably 6 different times hammering the park at the spots where I thought there could be more.
boy was I right! 2 class rings and a necklace.
good luck, and fake jewelry is good if it leads to the real stuff!
- also keep a junk jewlery collecction, you will be amazed how the stuff adds up!