We used to have a thread about what we thought the lamb necklace might look like but it was culled in the last few board maintenance blocks. This was always a hard one to pin down. Feel free to bring in ideas or even links to sites that you think may be a good representation of the image. I found two.
The first is an amulet from around 1100 A.D. Found in Denmark, exact site unknown. The motif is a symbolic depiction of Christ as the Lamb of God:
I always thought it would be a good one minus the cross. The lamb is very stylized though and you wouldn't initally know it was a lamb unless you asked the wearer what it was...even then it's kind of iffy, but I like it a lot. In my mind's eye it's the closest to what I think Mercy wears.
The second is based from a sheep petroglyph found in Moab, Utah:
I'm just a fan of petroglyhs so I thought this was a nice one to bring in. Clean simple lines.