Bejeweled starfish, sea urchins, stingrays, and seashells, among other sea-inspired designs, make up the new Coastal Collection, the latest line of jewelry designed by Moti Ferder, design director and president of Lugano Diamonds. Ferder drew inspiration from a variety of ocean life for the new 25-piece collection and transformed his vision into elaborate jewel-encrusted pieces made with various metals.

Standout pieces include a South Sea pearl ring ($7,800) with brilliant-cut and rose-cut diamonds, aquamar…