CAN'T-MISS COLLECTION LVE Story Leo Schachter Diamonds’ new LVE wedding jewelry line, designed with millennials in mind, features a “trifinity” motif—imagine an oval Venn diagram—in every piece. Rebecca Foerster, executive vice president for strategic planning and marketing, calls it “a powerful symbol for couples that represents the thread of their journey.” Engagement rings and bands boast Forevermark center stones or American Gem Society lab–graded diamonds in 18k gold. The starting retail price for engagement rings with AGS stones is $4,350.  Top: princess engagement ring in 18k gold with 1.33 cts. t.w. diamonds, $8,500, band in 18k gold with 0.75 ct. t.w. diamonds, $4,000; inset: engagement ring in 18k gold with a 0.75 ct. diamond, $6,710, LVE for Leo Schachter, NYC, 800-223-2082, lsdco.com   HOT STOCK TIP On the Edge S