North African dagger?

[Congoblades]

I have this dagger, don't know where it's from, first tought was something like Touareg. I think it's not very old but looks nice. The blade have some strange "stripes", the hilt is made from red & yellow copper, wood and alluminium? It is 29 cm long and the blade is about 4-5mm thick, any coment is welcome, thanks.