1. Enable transparency in Sketchup material settings using the opacity slider
2. Set the material type to SPECULAR
3. The opacity slider will change the amount of RGB absorptivity. Set to 0 for no absorptivity (i.e. clear glass).
4. SPECULAR materials should have thickness to render properly.
Create Material with Specular Highlights
1. Set the material type to Phong
2. Set the index of refraction to >1.0
3. Use the exponent value to control the glossiness.
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