Simple jewelry doesn't have to skimp on personality. The proof? Gabriela Artigas, an LA-based designer with Mexican roots, whose everyday statement pieces are made totally by hand (with help from her sis, Teresita). As a result, each piece is imbued with the sisters' eclectic sense of cool, drawing on everything from architecture to rock 'n' roll. This sleek 14 karat ring is ringed in black diamonds, and the girls in our office are stacking it with pretty much everything.