diffgeom, The Luminoso necklace at the Differential Geometry math art shop, inspired by cyclides of Dupin:
https://diffgeom.com/products/luminoso-golden-pendant
https://diffgeom.com/products/luminoso-rhodium-pendant
diffgeom, The Luminoso necklace at the Differential Geometry math art shop, inspired by cyclides of Dupin:
https://diffgeom.com/products/luminoso-golden-pendant
https://diffgeom.com/products/luminoso-rhodium-pendant