You can visit any number of PS vendors and enter your criteria in the search bar - that should allow you to see anything they have. Many will custom make a band to your specifications as well.
I got one made by this Etsy seller, Dazzling Designers and was very pleased with it. Mine is a 3/4 eternity in 90:10 platinum:iridium to match my engagement ring which wasn't their usual platinum alloy but they were quite happy to use a different one. Really nice people to deal with and prompt on email communication.