The phrase 'investment piece' gets bandied around too often, but a classic watch is truly deserving of the title, reads The EDIT . Jaeger-LeCoultre's 'Rendez-Vous Night & Day' timepiece is made from polished stainless steel and has a beautiful guilloché dial recalling the fluid movement of silk. The indicator at six o'clock beautifully displays the procession of the sun and moon to symbolize day and night. It's dotted with 60 diamonds totaling 0.63-carats - what could be more special than that?