JewelK3-4Q3(S3)

This is a Stewart Toroid. For a defintion, see the Wikipedia entry at https://en.wikipedia.org/wiki/Toroidal_polyhedron, or better still, if you can get hold of a copy, Adventures Among the Toroids, by B. M. Stewart. Unfortunately Professor Stewart did not live long enough for 3D printing to become available to make solid versions of his toroids. I am an admirer of his work and i am working on making some of his toroids available on solid form. This is the simplest one with a three-dimansional symmetry group. If there is enough interest I will try to model some of his more complex toroids. This is a small version with a hanging loop attached, suitable for printing in silver or gold  as an earring or a pendant. Anything smaller than this would by too small compared with the hanging loop, but I can make a bigger one on request. A larger version in cheaper materials for display is also available. For my other models, see my web page at https://www.zen224037.zen.co.uk.

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