Rock Encyclopedia

Everything at a glance, from A to Z

Sämtliche in diesem Lexikon angeführten Steine, ob in kristalliner, getrommelter oder geschliffener Form sind bei uns im Geschäft erhältlich.

 

Our encyclopedia lists only the main mining regions under "Origin."

  

The color varies depending on the mineral's origin.

Hardness levels

Die Härte der Mineralien richtet sich bei der Härteprüfung nach Friedrich Mohs (1773-1839), die vornehmlich in der Mineralogie zum Einsatz kommt. Mohs, ein Geologe, ritzte verschiedene Minerale gegeneinander und ordnete sie so nach ihrer Härte. Durch das exemplarische Zuordnen von Zahlenwerten für weitverbreitete und somit leicht zugängliche Minerale entstand eine Ordinalskala, die Mohs-Skala, die in der Mineralogie und Geologie in weitem Gebrauch ist.

ATTENTION:

Stones that are not suitable for water treatment due to their chemical composition:
azurite, chrysocolla, dioptase, dysthene, galena, hematite, copper, lepidolite, magnetite, malachite, marcasite, pyrite, selenite (dissolves), tiger iron, turquoise, cinnabar

General information
about the stones and minerals listed here.

We would like to inform you that the healing properties of healing stones, minerals, crystals, and gemstones are in no way a substitute for medical advice or medical care. Nothing written on this website is intended as a guide to therapy or diagnosis in a medical sense. Since we obtain our information from various reference books, successful healing cannot be guaranteed.

Mineral Hardness (Mohs)

Rock: Talc
Test method:Scratches with a fingernail

Rock: Rock: Gypsum or halite
Test method:Can be scratched with a fingernail

Rock: Calcite (calcite)
Test method:can be scratchedwitha copper coin

Mineral:Fluorite (fluorite)
Test method:easily scratched with a knife

Rock: Apatite or manganese-
Test method:can still be scratchedwitha knife; tooth enamel, the hardest human tissue, has this hardness

Rock: Orthoclase (feldspar)
Test method:can be scratchedwitha steel file

Rock: Quartz
Test type:Scratches window glass

Stone: Topaz
Test type:

Mineral: Corundum
Type: Onevariety of corundum is sapphire

Rock: Diamond
Test type: The hardestnaturally occurring mineral; can only be scratched by itself and (when heated) by boron nitride

Unless otherwise specified, information regarding the hardness of minerals always refers to the Mohs scale.

  • All
  • Stones A–C
  • Stones D-K
  • Stones L-R
  • Stones S-T
  • Stones U-Z