Tiffany Metro- single or full cut?

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I'm interested in the Leon Mege String Theory bands and he gives the choice of single cut vs. full cut diamonds. I've never tried on the String Theory band in-person, but have tried on the Metro band and thought that it was really sparkly. Are the Metro bands single cut or full cut? My husband and I have called 4 different Tiffany stores and received different answers from each of them (2 said single and 2 said full). The website says "round brilliant" which I interpret to mean full cut. I'd like to know if the Metro bands are really single cut because then I would definitely get the single cut diamond String Theory band (vs. full cut).

edit to add: I'm posting under my husband's old account because I can't log into mine. I'm LE with the Leon solitaire ring (last posted a few years ago).