Mastercraft Demimateria has a rate of around 15% or so and field 3s around 25% with the other 50 composed of rose gold nuggets or failures if destroying them with a success rate of mid 70s, Artisan Spectacles of course which is highly likely the only viable source for them atm other than one particular housing item that would need a level 100 gsm to break down, there are some other housing items as well but again would need 100 in their respective craft or face a shitty return rate