The Geometry pen line is definitely popular because of its gorgeous appearance. This is a high-end version, crafted from stainless steel with a Champagne gold plating on the outside.
This pen is the crystallization of a creative idea, a modern carving technology and the skillful craftsmanship of Montblanc artisans. The Geometry version uses geometric carvings to create a floating effect that interacts with the light, making the pen model look like a large and luxurious gemstone.
This pen model is also the Legrand water ball version, which can be considered the "vedette" in Montblanc's Geometry collection, and is one of the pens that any Montblanc collector would want to have.
See price details here.