Square

Paper: 12 sheets of 7.5cm squares; Kami (red/white) and Japanese Foil (gold/white)
Model: diameter of 14cm

Klaus-Dieter Ennen has been getting creative again, and I've had the privilege of doing an early fold of his new Star Elli.

Paper: 8 sheets of foil-backed crumpled paper (buy e.g. at Kim's Crane, Viereck Verlag or Miyabi), 7.5cm side length
Model: diamater of 10.5cm

With some slight modifications when folding the modules, the Braided Star transforms into this more advanced version. Fantastic!

Paper: 30 squares of foil-backed paper with a side length of 5.4cm, green/gold
Model: diameter of about 6.5cm

If you're interested in buying this kind of paper:
I bought it at the CDO convention ship, but I think the following pages list multiple color combinations of the same paper, just in other sizes:
http://www.origami-p... (7.5cm)
http://www.origami-p... (12cm)
http://www.origami-p... (15cm)