That´s a curved surface replica of the Aztec calendar (Also know as the Sun Stone) found at Basement of the Zócalo of Mexico City,and currently in the National Museum of Anthropology of Mexico.They represent Tonatíuh (sun) in the center, within the Olin symbol (permanent movement of all matter), which in this case, represents the 'olintonatíuh' heliosphere Above Ikisauayankayotl Tonatíuh (ecliptic) On the sides Xiukoatl (fire serpents or meteorites) Inside of the 4 squares that surround it, we find the classic planets.File formats are in .STL,.OBJ,.3MF and *.FBX.*. OBJ version include 2 Res-Mesh;1.800.000 polys and 7.700.000 polys.....STL,*.3MF and *.FBX are decimated to 500.000 polys....Size is: 3.51 x 0.64 x 3.51 cm1.38 x 0.25 x 1.38 inchesYou can make Jewerllys with that model ,Silver,Gold;Steel,Brass,etc...Using Services like Shapeways or IMaterialize or making your own and Sell them...but you CAN NOT sell the 3D model itself...