Corundum (ruby and sapphire) is relatively hard—9 on the Mohs scaleMohs scale
The Mohs scale is a not a linear scale. Instead it ranks gems on a relative scale based on their scratch hardness, so although corundum (ruby or sapphire) is a 9, a diamond at 10 is many times harder. Only a diamond can scratch a diamond. Corundum can scratch itself, topaz (8), quartz (7), and anything softer.
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Christmas has come early for Dwayne 'The Rock' Johnson and his girlfriend Lauren Hashian. The couple have welcomed their first child together, sources have confirmed to HELLO!
Lauren gave birth to a healthy baby girl on Wednesday, just days after she revealed how much she was enjoying her pregnancy in a sweet Instagram post. Sharing a photo of herself and the actor together as she proudly showed off her baby bump, Lauren wrote: " Read More...
The results of some students in the just-concluded 2024 UTME have continued to excite many in the country, indicating the future is indeed bright Interestingly, a female student from the north, Zainab Asake, got 362, and 30 other students from a school in Kwara state scored 300 and aboveIn this article, Legit.ng presents a list of students from different schools across Nigeria who emerged as top performers in the just-concluded examLegit. Read More...