Double coding. You need something that's not a color to help distinguish. Artwork is a big part of it, and the ore / score both look very similar.
The difference in the diamond and the circle are only the pixels that make up the tips of the corners of the diamonds. They don't have incredibly distinctive silhouettes. Triangle and circle? Star and square? Try some different combos of shapes.
As for the artwork, they both have a blue core, and some small specs that give their color. (which... the bronzy yellow and muted red are vaguely similar). I wish the overall shape of the ores were much different, or just different objects all together. But they don't have to be similar; and this is your world to make. One could be rocks and the other jewels. Go even more out there; one mushrooms and the other diamonds!
There's an app I always like to recommend people; Chromatic Vision Simulator. You can use your smartphone and see a little more clearly (or not :P) what I'm talking about with regard to colors. I always recommend double coding things; if you put it in black and white, how can you tell them apart? If the answer is "you can't" then you're making something 1 in 20 people will struggle with.
You're welcome to reach out here or another platform, same username. Happy to discuss and help where I can.