Designs Ready· High Priority· natural-history
Mohs Hardness Scale
A Comparative Scale of Mineral Resistance to Scratching
Visual Approach
Mineral cards with crystal SVGs, Vickers absolute comparison bar chart, field testing reference
Designs
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poster-A3
comprehensive · natural-history
1400 × 2453px @ 150dpi

poster-A3-portrait
comprehensive · natural-history
3508 × 4961px @ 300dpi
Production Notes
One of the best pieces. Crystal illustrations + absolute hardness chart + field testing objects.