Hi Buck,
It’s a good question, thank you!
Basically, diamond polishing paste works well with all gems, but, depending on the hardness of the stone, you might need pastes of different grit to get the best results. For example, for a ruby 8,000 will be enough, but for an opal you’ll need 100,000 Grit.
Unfortunately, 3636 is not a match for a dremel, and tools we sell are not for work with wood. Sorry, can’t be helpful here.
Mariya.