Today's new idea comes from Nature Stone International, in Dallas, TX:
Actually a cosmetic overlay, the working parts of each faucet comes from major brand name faucets (e.g. Kohler,Delta,Grohe,Danze,etc.) They can also be retro-fit for most most exisitng faucet brands. Certification and warranties would therefore be that of the working part of the faucet. In addition, the "handles" are made to comply with ADA handicap requirements.
Jim Hill of Nature Stone also tells me they'll work with customers looking for custom designs. Send them your specifications and requirements and their design team will get back with the information within 48 hours.
They also offer stone sinks to match, along with custom engraving and inlays. The pricing seems pretty reasonable too. Just $99 for the faucet above. Almost makes me want to order one just to see it.