All metals contain some amount of nickel. Titanium binds what tiny amounts of trace nickel are present and is the safest of all metals to contact if nickel allergic.
Silver titanium looks like upscale, expensive platinum. Or for a different look, choose gold plated titanium earrings.
For those exquisitely sensitive to nickel, Blomdahl also offers medical plastic earrings with 0% nickel.
All earrings are bezel set and all stones are Swarovski crystals.
For reference, the 5mm setting is about the size of a half carat diamond.