G10 is a composite material that's made by layering glass cloth soaked in expoxy. It's very popular in the EDC community for knife scales because it's light and durable but there are challenges to making it into pens. Specifically, it only comes in sheets and is extremely messy to machine.
The OD Green color should remain unchanged over time. Also, the texture is prominent right out of the box but will eventually smooth on the high-wear areas. FEATURES & SPECIFICATIONS Stainless Steel Clip, Titanium Hardware Diameter: 0.485" Mini: 4.4", 0.74oz, Pilot G2 Mini 0.7mm ink refill.