Vintage jewelry

My mom and I went to an antique store and we came away with some great stuff, which we got great prices on (30% off the tag)! The mourning jewelry is pretty - the rhinestone necklace is to wear with fancy 18th century (I know it's not period). The buckle is pretty but when I got it home, I realized it was fused so I'm not sure I can use it as a buckle. I really like the comb.