I 3D printed the sword in a smokey resin by Siraya tech resin that I hoped would be dark enough to look like obsidian. It wasn’t, but resin is easy to paint, so I didn’t mind the lightness. Some of the gold still shines through, and I had to consider that when painting the model. But Nikko managed to extrapolate a final shape and give us this model. If you’ve ever picked up a rusty piece of metal, doctor strange costume you’ll know the texture I mean.