Nice hunting. I have the same half pendant thingy. Definately silver. The 925 mark is on the top of the loop on the other side. Mine is bent unfortunately.
Mr google says. The text. "divisi ma sempre uniti" is an italian phrase that means "divided but always united."
You often get necklaces of a heart with the phrase written on it. The heart breaks into two pieces and each partner takes one half. It shows that they love each other and that although they maybe far away from each other, they are always together in spirit and love.
A very junky spot, though well done on pulling out some coins and silver pendant from that lot. Might have some age to the area, I reckon there might be an old harmonica reed sitting amongst your junk there, could still have potential for deeper pre-decimals.
A lot better find to junk ratio from the oval compared to your location on previous post, I bet that was a relief. Are you running in allmetal on the 305?