The diamond is the hardest precious stone. Which two other gems tie for second, with a hardness of 9.0 on the Mohs scale? Photo / 123RF
/cloudfront-ap-southeast-2.images.arcpublishing.com/nzme/3WF7AJHAMPWW6L2MLEN6ZXE2TU.jpg)
Test your brains with the Herald’s afternoon quiz. Be sure to check back on nzherald.co.nz for the morning quiz tomorrow.
To challenge yourself with more quizzes, CLICK HERE.
0 Comments