Dragon ring, size 17mm, weight in gold 585 3.72, in silver 925 2.95g, stone square 3 by 3mm. Two files are available, the first with a smooth surface inside, the second with scales inside.
STL (Stereolithography, filesize: 59.7 MB), OBJ (OBJ, filesize: 69 MB), 3DM (Rhinoceros 3D, filesize: 25.7 MB)