Authentic Platinum.  Don't be fooled by the multiple knock-offs on Ebay & Amazon.   
 
The “Black diamond” was made particular in a texture of the barrel, incorporating a factor as jewelry to make it suitable as a writing instrument for adults. A black diamond is applied as a motif providing a unique black deep translucent barrel. At a glance, it appears to be a shiny black barrel. However, a transparent material is used in a barrel, so inside the barrel is seen through in the degree of light creating a mysterious image of a black diamond.

The innovative cap contains a unique “Slip & Seal” mechanism that prevents ink from drying out in the pen. Meanwhile, a newly redesigned nib and feed regulate the ink flow.
 
Founded in 1919, Platinum Pens is now nearing a full century of achievement. The #3776 “Century” celebrates this approaching anniversary and continues Platinum Pens’ tradition of technological innovation. With Platinum Pens, the pleasure of writing and the use of fine writing instruments will always be evolving.

What qualities make for the ideal contemporary fountain pen? Sleek design, comfortable writing balance, smooth flow, and fast-drying ink… At the request of customers, we at Platinum Pen have gone back to the basics to address these issues. Every part and mechanism has been carefully studied and re-engineered. The result is the #3776 “Century,” designed on the base model of the popular #3776 series pens.

Filling System: Proprietary Cartridge / Converter (Included)

Nib: 14kt Gold