I've never heard of Diamond Beauty, and only after some research did I learn it is a small brand that mainly features fake eye lashes. They do carry point makeup too, just not as many variety and color selection is quite limited.
That said, browsing through Don Quixote's drugstore floor I chanced upon the testers for this Diamond Nose Makeup (arhh?!?) and found these, yes, contouring and highlighting powders to be exquisitely fine and silky! So even though the small and totally generic and somewhat cheap-looking compact is actually pricier than similar items from other drugstore brands, 1,050yen versus 6-800yen from Canmake, Visee, Kate, etc., I picked one up!
Diamond Nose Makeup 01 Princess Nose and 02 Dolly Nose (...I didn't come up with these names...)
***Picture from Diamond Beauty.