The third hardest gemstone is ruby and then the fourth hardest is emerald.
Osmium is one-third as hard as quartz. Tool steels are one-fourth as hard as osmium. Chromium has a oxide layer harder than corundum if dry and sputtered.
The hardest substance that is naturally occurring is a diamond. However, there are harder substances that have been made by scientists in labs.
The seventh planet from the sun is Uranus. It is the third largest planet in our solar system and the fourth most massive.
A gemologist studies gems.
The third largest island in the Philippines is Samar, known for its natural beauty and diverse ecosystem. The fourth largest island is Palawan, famous for its stunning beaches, coral reefs, and underground river.
What's the answer to hardest test on Phone
Osmium is one-third as hard as quartz. Tool steels are one-fourth as hard as osmium. Chromium has a oxide layer harder than corundum if dry and sputtered.
The third and fourth ventricles are linked by the aqueduct of Sylvius .....
Osmium is one-third as hard as quartz. Tool steels are one-fourth as hard as osmium. Chromium has a oxide layer harder than corundum if dry and sputtered.
Jefferson was the third president, James Madison was the fourth.
a fourth is 8% smaller then a third
No, one third is more than one fourth
fourth
Noah and Adam are the third and fourth oldest men in the Bible
you can find the fourth gem if you go on the ferry
third
The third is called 'Speak now' and there is no fourth one at this point.