A Sierpinski tetrahedron, the 3D version of the Sierpinski triangle, stage 5 I think. There are 4096 of the smallest tetrahedrons. The model has 499994 faces.

Update:
The edges are now almost 18 cm (7 in) long and it stands about 14.5 cm (5.7 in) high.

The model has been updated because the smallest struts were a bit too small to be printed. So it's now 1.5 times bigger in all directions.

The pictures are of the previous smaller version, the new version has been ordered successfully a number of times in WSF.

I created the model using POVray and MeshLab.

Earring with a head similar to Escher's works such as Bond of Union and Head in Clouds.

This model contains only one earring. To get the pair put a quantity of 2 in the shopping cart.

Not available in Detail material because of lack of rigidity.

One earring in order by default. To order two earrings choose quantity 2.

Here's a pair of spiral earrings, available in a variety of colors and types of plastic.

Please check out the other pieces of plastic jewelry available in my shop: Jewelry - Plastic
My complete line of jewelry is displayed here: Jewely - All

One for all the math geeks out there. Five intersecting tetrahedrons neatly tucked inside a dodecahedron. Confused? Google it.
Note: 1mm thin, so no aluminide, sandstone or steel. Sorry.

One of the 5 platonic solids, this regular tetrahedron is composed of 4 framed equilateral triangles with the curious angle of 19.47.

Plato assigned the most mobile of the platonic solids, the tetrahedron, to fire.

(earring hooks included)

Here's a starry set of earrings, available in a variety of colors and types of plastic.

Please check out the other pieces of plastic jewelry available in my shop: Jewelry - Plastic
My complete line of jewelry is displayed here: Jewely - All

(earring hooks included)

A smaller version of Five Intersecting Tetrahedra without an icosahedron inside.  There is just enough space between the pieces that it will print as 5 separate objects.  The edge length of the tetrahedron is 5cm, it stands 5.7 cm high.  Without the inner icosa, this version will allow more movement of the pieces.  I have also rounded the tetrahedra corners so they aren't so sharp.

The photos show the model printed in white and colored by hand using fine point felt-tipped pens.  I inserted small pieces of paper to protect the other pieces while coloring one, I was somewhat successful.  I was able to color each piece completely on the outside, but I didn't try to color the insides as you can see in the photos.

A tetrahedron puzzle to go with your Christmas Octahedron. This puzzle has two pieces which can be snapped together. You just need to find the correct orientation and rotation to assemble it.

The tetrahedron is about 4 cm or 1.5 inches in height. The spheres are 15 mm in diameter. I have added a loop to the puzzle, but you will have to supply a loop of thread for hanging.

Follow this link for a 1-page pdf with assembly instructions.