Stuller partnered with Pixologic (makers of ZBrush) to create MatrixGold. This software is superior to Matrix 7 because:
The jewelry industry has moved on. While nostalgia for Matrix 7 is strong, using it in a modern business is problematic: Gemvision Matrix 7 Download
Do not do it. The risk is not worth the saved money. Stuller partnered with Pixologic (makers of ZBrush) to