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What is the hardest rock on earth?

Correct answer: Diamond

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What people think about it: 21 Comments

Mahalia

They said "only a diamond can cut a diamond".

Lloyd M.

cool info really appreciated, but i am just a bit concerned about the term used for diamonds. Diamonds are minerals - meaning their internal structure and chemical composition are definite. The term 'rock' is only used for a solid substance that is formed by aggregates of many different mineral grains that are fused, cemented or bounded together.

Player #35646063

Diamonds are formed in the earth through chemical reactions while a mineral is a solid

Lloyd M., I see. So basically rocks always consists of several elements? Thanks for clarifying!

Marp

live and let diamond

Saltnpepper20

Now i know thanks for info.

Liam

Saying 'a Diamond is forever'

Paul

These are all minerals, technically NOT rocks. Rocks are made of more than one mineral as a rule, though there are some exceptions.

Moonlight

Mahalia, You're right 👍

ray

Player #35646063, And extreme pressure.

RUBEE🚀ROKIT

don't forget blood diamonds which are mostly in royal jellery,as their is no mines in London?

Shan

ShINe bRIgHT lIKe a DiAmoND

Trin

el genio (m), me neither bro

Diamond ice hashira 🎐

I love diamonds even is in the jewelry

peykansiah

Stones are rated 1 to 10 of hardness. 1 & 2 is crashed by your nail. The first type I remember we were using as light natural glass because you can see through that. 3 is crashed by nickel coin. 4 & 5 is crashed by iron knife. 7 is quartz even knife cannot crashes that. 8 is topaz 9 is emerald and 10 is dimond.