The list you provided represents the Mohs Hardness Scale, which ranks minerals based on their ability to scratch softer substances. This scale was developed by Friedrich Mohs in 1812. It ranges from 1 (talc, the softest) to 10 (diamond, the hardest).Here's the list from hardest to softest:1. Diamond – Hardness 102. Corundum – Hardness 93. Topaz – Hardness 84. Quartz – Hardness 75. Orthoclase (Feldspar) – Hardness 66. Apatite – Hardness 57. Fluorite – Hardness 48. Calcite – Hardness 39. Gypsum – Hardness 210. Talc – Hardness 1