The Origami Star Dodecahedron is one of the many models that can be folded using the SIP (Six Intersection Pentagrams) Unit. The SIP model was co-discovered independently by Francesco Mancini, Jared Needle and Leong Cheng Chit. The same unit can be used to fold the Star Icosidodecahedron (60 units), the Star Dodecahedron (30 units) and the Star Prism (15 units). And since I tend to fold a lot of 30-unit models, I tried out the star dodecahedron 
The units are fairly easy to fold and assemble. I had used handmade marble paper and am quite pleased with the way it turned out, though I am not too happy with the photograph! But I do like the ethnic feel that the terracotta ducks add to the picture
Model Details:
Model: Origami Star Dodecahedron
Creator: Francesco Mancini
Creator on the Web: Flickr!
Classification: Origami | Modular
Difficulty Level: High Intermediate
Paper Ratio: Rectangle in ratio 1:2
Paper Size: 4 inches by 2 inches
Model Size: ~ 7 inches in diameter
Tutorial: Youtube
Diagram: Creating Origami (The pdf provides the instructions for the Six Integrating Pentagram model, but the first page of the pdf has the diagrams for folding the unit).