The material library of the transparent and semi-transparent gemstones.
The library was made with 3ds Max 2011 and V-Ray 2.40.
We provided physically correct values of Fresnel IOR and Dispersion/Abbe properties.
We examined hundreds of real gemstones studio photos and reproduced accurately the existing color variations of gems.
We made a lot of test renders to tune each gemstone material to real-life look.
The library features:

26 unique minerals with real-world color variations (32 gemstone materials in total)
Physically accurate optical properties
Thoroughly reproduced transparency and color tones of real minerals
Unique and meaningful names of the materials
Three deliver forms: one united library, 32 individual libraries, 32 individual scenes with ‘shaderball’
Compliance with real world scale (system units – centimeters)
Compatibility with 3DS Max 2011+ and V-Ray 2.40+
Materials are completely ready for visualization
Previews were rendered in 3DS Max with V-Ray renderer
17-page Catalogue of entire library with 600x600pix quality renders and hyperlinks for fast search
User Guide with detailed explanations on using of the library and tuning of gemstone materials to specific needs

The library includes the materials:
Alexandrite, Amber, Amethyst, Apatite, Aquamarine, Chrysoberyl, Citrine, Diamond Clear, Diamond Pink, Diaspore, Emerald, Feldspar Amazonite, Fluorite Blue, Garnet Almandine, Garnet Andradite, Garnet Spessartine, Heliodor, Iolite, Kunzite, Morganite, Peridot, Pezzottaite, Ruby, Sapphire Blue, Sapphire Padparadscha, Spinel Red, Sunstone Gold, Topaz Blue, Topaz Yellow, Tourmaline Indicolite, Tourmaline Rubellite, Zircon Blue
The release includes the following formats:

.mat (Autodesk 3ds Max 2011, V-Ray materials)
.max (Autodesk 3ds Max 2011, V-Ray materials)
.png (Preview images)
.pdf (User Guide, Catalogue)

Materials: YES, procedural
UVW mapping: Not applicable
Textures: NO
Notes:

Diamond geometry and studio lighting setup are not included
The licensing conditions permit the per-seat usage only
To give an idea of how gemstone materials will look in the final image of jewelry models, moderate contrast and saturation were applied to all preview and catalogue renders.

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