Trunk-Show Silver Streak When Marie Helene Morrow, the owner of 30-year-old Reinhold Jewelers in San Juan, Puerto Rico, discovered Saundra Messinger’s silver line a few years ago, she knew it was a perfect fit for her clients. But it took a recent trunk show to remind her of the collection’s popularity—and of the importance of in-store designer appearances.The events, which took place last fall at Reinhold’s two locations, focused on Messinger’s matte-finished sterling silver jewels, some set with brilliant-cut diamonds. The work of the Nyack, N.Y–based designer appeals to Morrow’s clientele for its simple styling and price points (retail prices start at around $100). “It is organic, not flashy, can be worn in the daytime as well as in the evening, and can also be worn in many different ways,” says Morrow.Messinger, who hadn’t been to Reinhold’s since opening the ac