If you were to make your own nib and tipping from unconventional materials as we have known Palladium, Gold, and Steel have been used and commonly the dreaded Iridium, and various alloys has been used as a tipping material, this may or may not be related to the most expensive pens in the world hmmm having researched about metals... how does Zircon and Tungsten Carbide sound LOL I know I'm playing safe... but I always wanted a pure gold glass nib LOL