Diamond ring in leather box with velvet and silk padding
Model is almost completely quads, only triangles are on the diamond themselves, due to the nature of diamond cuts.
Box body is UVW unwrapped, while the silk is just mapped. The ring and the diamonds are not mapped.
3dsmax 2014 Model is created in real world scale, units are centimeters. Included Corona (1.6) and V-ray (3.0) variants.
Corona and V-ray materials. All preview images rendered with Corona.
Textures: Diamond_Ring_Line.jpg 2240x1680 Diamond_Ring_Red_Leather_.jpg 4480x3360 Diamond_Ring_Silk_Bump.jpg 500x500 Diamond_Ring_Velvet_Normal.png 800x800 (needed only for Corona version)
All preview images are rendered at subdivision level 0, model is created without further subdivision in mind, but if necessary clean edge flow does allow it (as shown in wire frame images).
Even though diamonds have extremely tight support edges which make subdivision possible (as shown in wireframe images), i recommend excluding them subdivision, due to the extremely 'sharply' cut edges of real world diamonds.