Nickel thank you for your help re greek orthodox crosses.
Can you offer some more help as I am unsure of which cross to use.
http://www.londonbaystationery.com/Images/cross_fleurie.jpg
http://www.gallerybyzantium.com/store/graphics/00000001/1210AF.gif
All help appreciated.
I so much like the second cross! Especially because of the inscription, meaning LIGHT (=ΦΩΣ) and LIFE (=ΖΩΗ). I am not really sure as to what exactly you are looking for, but I can assure you that it definitely looks greek and orthodox to me :-) Well, anyway, Byzantine, but still very familiar.
Also, as my uncle is an orthodox priest, I can assure you that I have never seen the first kind of cross in his home. Maybe they have that in their vestments or in items used in Mass, but, as I said, nothing more than that.
However, in religious ceremonies the christian cross is used (as in the Wikipedia's first article that Nickel has quoted) or even the Patriarchal one, only that the smaller crossbar might be slightly slanted, often bearing the inscription IN BI (an acronym of the phrase ''Jesus of Nazareth, King of the Jews'' in greek). The Byzantine cross of the Eastern Orthodox church (from Nickel's first Wikipedia link) is also quite common, only not so elaborated (yes, that's right, like the one in the second Nickel's link).
That being said, my personal opinion would be that if you are looking for a meaningful piece of jewlry, and not anything too explicit in historical or religious terms, go for the second option of yours. Good luck :-)