People all over the world liked it a lot ... But have you ever thought about how to measure its hardness? Use a tanzanite Mohs scale. On a scale from 1 to 10 that measures toughness, tanzanite ...

Geologists do it according to the Mohs Scale of Hardness. There ... (A tooth, despite all that fluoride, is a good bit tougher than Fluorite and weighs in at a solid 5.) Porcelain, if you take ...

The people at "TV Tropes" have so much cult jargon that they're in a conceptual world all their own ... A subclass of this class (arguably 2.5 on the scale) contains stories that are generally ...

It’s about as hard as a 7 to 7.5 on the Mohs hardness scale, which measures how well minerals resist being scratched. This means tourmaline is long-lasting and good for all sorts of jewelry that ...

Diamond is the hardest known material on the Mohs scale and has a Mohs hardness of 10, so it can produce a scratch on the surface of say, Corundum — Mohs value 9 — but not the other way around.

The Mohs hardness scale ranges from 1 to 10, with talc having a rating of 1, and diamond coming in at 10. Sapphire crystal is rated at 9, with Gorilla Glass, and all glass, falling in between 5 ...