We tested various materials along the Mohs hardness scale to demonstrate the power of water, starting with obsidian and ...

The Mohs hardness scale is a relative scale usually used for minerals and does not involve any measurement of deformation, as do other quantitative methods. It simply involves the assignment of a ...

Despite its hardness, agate is more delicate than you might think. It's slightly less hard than quartz, coming in at 6.5 to 7 on the Mohs scale.

The Mohs scale is a measure of a mineral's hardness, with 1 being the softest (talc) and 10 being the hardest (diamond). Rose quartz has a Mohs hardness scale rating of 7.

The Mohs scale charts a material's hardness with reference to a selection of minerals. It's an ordinal scale: Gypsum, at 2 Mohs, is twice as hard as 1-rated talc, and so on.

The Mohs Hardness Scale display can be found in case number one on the main floor of the main gallery at the Keck Museum. Mineral Monday is a weekly video series exploring the many amazing minerals, ...

Datastream Talc 1 Gypsum 2 Fingernail 2.5 Calcite 3 Copper penny 3 Tooth 5 Steel 5 Glass 5.5 Quartz 7 Porcelain 7.5 Topaz 8 Diamond 10 Start Previous: My Paparazzo: Hiring a Stalker Is Easy Next ...