A ZS diamond with customized font. Pleace note that it's shining ;p

Not what I'd usually choose for a 'jewellery' font, but I liked the contrast (might be just me tho, and I'm biased ;p). Anyway, the last preview page shows how it'd look with different font.

ZS neckless and diamond

This is my second proposal for your company logo
This is a vector logo, so the original files
can be transfered upon the end of the contest.

ZS and diamond

stylish z and s with rock on top or bottom.

More focus on the style of the wording with a simple diamond accent.