“Watches in shades of blue and silvery-gray are sure things this season.” —Editor-in-chief Victoria Gomelsky   (Above) GP’s new Laureato: the perfect boyfriend watch or a watch perfect for boyfriends? Yes, please. (Girard-Perregaux, $14,300, girard-perregaux.com)   I’m lusting after this sleek sporty-glam model in Vacheron’s redesigned Overseas collection. (Vacheron Constantin, $24,900, vacheron-constantin.com)   The case of the Big Bang Unico Sapphire, cut from a block of sapphire, takes transparency to an awe-inspiring new level. (Hublot, $57,900, hublot.com)    In typically playful fashion, Victoire de Castellane combines turquoise, diamonds, and tsavorites in this chic design from the new Granville collection. (Dior, price on request, dior.com)    The new Duetto moonphase model only deep