Bridesmaid Jewelry- opinions?

Well, after the fiasco with David's Bridal, I found another dress that I love and have chosen for my bridesmaids. Here it is- it's the second from the right. The sweetheart neck with the bow. The color is the one shown. And the shoe I have chosen is this:

I chose silver shoes instead of gold because the dress has black undertones, and I think we will do black tuxes with dark grey/silver vests. I just thought silver went better with that. So now my dilemma is what jewelry to have my bridesmaids wear. I think the dress looks nice with a necklace, but what kind? What do y'all think? I've thought about pearls or even a dainty silver necklace, but I like the chunky look of the necklace in the picture. However, I don't want whatever I choose to cost a whole lot. I really don't want to give my bridesmaids the necklace/earrings they wear as their main gift because some of them just aren't into that sort of thing and would probably never wear it again. I thought if I chose pearl necklaces, they could each choose their own to wear, which would be unique, and if they didn't have a pearl necklace, they could always borrow them. I have several, in fact. Do y'all think pearls would look good with the dress and shoes, or something else? All ideas are appreciated!! Thanks, and have a great weekend :-) **P.S.- Can anyone tell me why blogger won't let me put spaces between paragraphs. I put spaces and then when I preview or publish, it runs them all together in one big paragraph. It has just started doing this- frustrating!!