The new Perle collection of faucets, taps, towel holders, and other bath accessories brings together an unparalleled triumvirate of luxury brands: the Normandy-based atelier for handcrafted bath fixtures THG Paris, the famed hospitality designer Pierre-Yves Rochon (whose international projects include Paris’s Four Seasons George V, London’s Savoy, and Shanghai’s Peninsula Hotel), and the legendary French crystal house Lalique. THG commissioned Rochon to design these “necklaces of transparent satin crystal pear…