Domed Profile Sandblasted Titanium Ring by titaniumknights, Etsy (ask about buying separately)
This would probably be confused as a gay pride wedding band (which is fine if that's your business). I just like rainbow and tie-dye.
Carbon Fiber and Titanium ring -- Pinstripe
4mm 6mm 8mm Titanium Rings for Men Women Black Dome Two Tone Polish Wedding Band (titanium, 10) SOMEN TUNGSTEN http://www.amazon.com/dp/B00MVU1HZO/ref=cm_sw_r_pi_dp_Qbwhwb1AK9HCY
Titanium Ring and Tulip Wood Wedding Band by jewelrybyjohan THIS but Rose gold not wood.
Rosewood and Titanium Ring- its in the details
Cathedrale Black Diamond Treated Titanium Engagment Ring
Titanium Ring Deer Antler Ring Antler Ring Mens Titanium Wedding Band Oak Wood And Antler Inlays Wood Ring
SALE: Size 11US 9mm wide Titanium ring with by PeacefieldTitanium
Titanium Ring Set or His and Hers Wedding Bands by titaniumknights