Hi Elly --
I think Barbara and Chewy gave you some great color combinations, and the other members have good ideas about switching up how you wear the pendants (on ribbon, leather, cording etc).
I am actually having a hard time "working backwards" to come up with the more specific outfit suggestions you want. Aside from a default "find a V neck top or dress in your best brown or green if you want to showcase a pendant" type of thing. I find it easier to see an item of clothing and then pick from the jewelry pool.
My failure of imagination, I know!
But I *will* say that none of the jewelry strikes me as particularly SW or boho. Most seem to have a lovely "boldly feminine" vibe, so if that works with the style direction you gravitate to, then why not play that up? Get something like the ruffled cardigans that are in now and pair it with a fairly simple top + denim or sleek cotton/knit pants.
[I think Kate just got an earth one at Ann Taylor Loft...I'm sure I'm forgetting all the other members who have something similar.]
If you're more of a minimalist, then work against the jewelry a bit and wear the nicest tailored clothing you can afford (and I don't mean suits, just clothing that's fairly unadorned and fits you as well as possible...it could be a sleek belted tunic over jeans). Then the femininity of the jewelry will stand out.
Don't know if that helps, but I did want to say that I don't think you have to feel limited by the jewelry.