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.
1 In some cases conventional medicine will be a major part of a Holistic Healing Plan, but in some cases it is not needed at all. 2  Natural Healing usually refers to the use of non-invasive and non-pharmaceuticals techniques to help heal the patient.