Until today I’d never roamed around the downtown L.A. jewelry district, much less bantered with sales clerks about the price of white gold and micro-diamonds. I went for a modest white-gold band, which to my unsophisticated eyes looks more or less like silver. The SRO went in a more upmarket direction. I didn’t drive down there on the Yamaha with an exact idea of plunking down formidable doh-re-mi, but my resolve melted when she put the twin rings on.