Jewelry Tetra Surface Hoops PreviousSquare Surface Hoops NextTriangle Surface Hoops Tetra Surface Hoops Tetra Surface Hoops $95.00 Sterling silver 3 dimensional tetrahedron hoops. From the mathematica collection this unique hoop gives you a fancy sci-fi edge others will be sure to admire. Add To Cart Facebook0 Twitter LinkedIn0 Reddit Tumblr Pinterest0