The rebel rouser takes her subversive sensibility to bridalIn a short black tailored suit and a fuchsia flower lapel pin, the heavily tattooed Anna Sheffield looks every bit the muse for the jewels she designs as she walks into her showroom in Manhattan’s SoHo neighborhood: soft and feminine, edgy and urban, pretty yet tough. Her makeup, if she’s wearing any, is imperceptible, and she has allowed her curly dark hair to gray. Her overall look is contradictory, unpredictable, impossibly chic. The same can be said about any piece in her ­jewelry collections, now numbering three in total.Last fall, Sheffield debuted her eponymous bridal and commitment jewelry line, a partnership with the Israeli princess-cut diamond manufacturer EFD Ltd. and licensing group EF3 Alliance. If ever there were a bridal collection for the unconventionally betrothed, this would be it.“How can you take fine