FREE 3 Gem Custom Cut Colored Gemstones and V-Ray Materials Free 3D model

cgtrader

3-Gem Custom Cut Colored Gemstones + Custom V-Ray Materials Sampler Real World Cuts & Real World Materials Deliver Real-World Performance in Your 3D Creations 3 Custom Cut Virtual Gemstones — real world cuts designed for real material reflective index ranges. These are real world cuts (I am a gem cutter as well as a graphic/3D designer)—if you design jewelry for real life, or the virtual worlds, these gemstones and materials are what you need to add real colored gemstones to your creations NURBS Based Geometry in Supplied Rhino Files (Rhino versions 5 & 6 included) Polygon Mesh Geometry in OBJ files — OBJ mesh geometry was created from Rhino NURBS originals and utilizes the least number of polygons necessary to generate the gemstone's facet shapes 20 Custom V-Ray Next Gemstone Materials — includes an assorted grouping of 20 custom V-Ray gemstone materials from various groups: quartz varieties (amethyst, citrine, rose de France, smokey quartz, praisolite, rock crystal, rose quartz), beryl varieties (aquamarine, emerald, morganite, green beryl, heliodore), topaz varieties (imperial pink, imperial orange, imperial red, imperial yellow, london blue, sky blue, swiss blue ), tourmaline varieties (indicolite, rubelite, green, paraiba), garnet varieties (pyrope, almandite, spessartite, demantoid), and cubic zirconia All of the materials included with this sample pack work seamlessly with any of the three custom cut virtual gemstones Notes: Scaling/Resizing: ALWAYS USE UNIFORM SCALE when resizing a custom cut virtual gem — each virtual gemstone has been optically designed for a specific primary material and range of secondary materials — that optical performance only occurs when the facet angles are aligned correctly so to avoid loss of optical performance always use uniform scale Size, Color and Optical Performance Guidelines: Gemstone materials get their color primarily from refraction fog color if you need to lighten or darken a custom cut virtual gemstone adjust the fog color and fog multiplier settings in the refraction section of the material (see V-Ray Next manual for complete description of how to make adjustments to the custom gemstone materials. The same material appears darker on larger stones, and lighter on smaller stones due to the amount of material light rays have to travel through. If you have applied a material to a custom cut virtual gemstone and it appears too dark adjust using a lighter colored version of the same gemstone In general, gemstones with a small number of facets are cut at smaller sizes, and gemstones with a high number of facets are typically cut larger (in the real world smallest working size for facets is around 1 mm anything smaller is hard to do by hand. So if you want your gemstones to look realistic in your 3D creations keep relative sizes correct