The Mette's rings were created by Mette Pederson. She has published 7 books based on the Mette Units.
This is actually a 2D ring, made from 18 modules. But a slight variation in the last fold makes it a 3D variation and is made of 12 modules.
Model Details:
Model: Mette's Ring Variation
Creator: Mette Pederson
Book: Mette Units
Author: Mette Pederson
Difficulty Level: Low Intermediate
Paper Ratio: Square
Paper Size: 3 inches
Diagram: Mette Units
Modules: 12