I just picked up the pendant - it''s GORGEOUS!!!!!

I just picked up the pendant - it''s GORGEOUS!!!!! Oh my!!!!!!! She is going to be so thrilled!!!!!!!!! I have to get those earrings!!!!!!! Now that my hands have stopped shaking: I''m wondering about the earring backs - is there a choice between screw back and tension? What are the pros and cons of each? I''m still thinking of .8 total for those. Thanks again - I''m going to have such a hard time keeping this pendant secret ''til Christmas!