Re: How Can You Scratch A Sapphire Crystal? While I have never actually heard of this happening, I find it plausible. Looking at the Mohs hardness scale (which is a relative scale, not absolute: IE: a 2 is not necessarily TWICE as hard as a 1), we find that Sapphire is a 9, and diamond is a 10. It's generally assumed that any substance with a higher number can put a scratch on anything with a lower number. What catches my attention is that silicon carbide is a 9.4 or so. This material is widely used in abrasives, such as sandpaper.
noun. The definition of conventional wisdom refers to something that is widely accepted as true or correct or proper. An example of conventional wisdom is the idea that if you work hard you will succeed.ords near conventional wisdom in the dictionary. 1  conventional-wars. 2  conventional-weapon. 3  conventional-weaponry. 4  conventional-weapons. 5  conventional wisdom. 6  conventionalise. 7  conventionalised. 8  conventionalises. 9  conventionalising. 10  conventionalism.
The Difference Between Knowledge and Wisdom. Knowledge: Having wisdom to know the difference; wisdom is praying for more. Knowledge is doing right; wisdom is motivation to do still better. Knowledge is having good intuition (a combination of gut and deliberation): wisdom is still honing your intuitions.