The diamond theme extends to the exterior, with a new design that Bentley refers to as double diamond. The detail is prominently featured in the grille and side vents.
Bentley said designers put "even greater focus on beautiful details" on the new model. The car's 22-inch wheels come in a new 10-spoke design and have self-leveling badges that remain upright even when the vehicle in motion.
The convertible will be available with either the 4.0-liter twin-turbo V-8 or a 6.0-liter twin-turbocharged W-12 engine. Pricing and availability were not announced.
The Continental GT Mulliner makes its public debut at next week's Geneva auto show.