the ring is made of gold. Suitable for 3D printing. The weight in gold of 585 samples is 2.6 grams. Created in the Rhinoceros program. The archive contains 3d max_2018, fbx, obj, stl, 3dm(rhino) and rendering materials. The ring size is 16.8 mm, the tire thickness is 1.7 mm, the tire width is 6 mm. The size of the 2 side stones is 4.3 x 5.5 x 3.3 mm. The central stone is 8.7x9.1x7 mm. Fastening of caste stones.