Mr.Hong
Rocks and Minerals.pptx
Rocks and Minerals.pptx
Novmeber 22, 2011
google docs
Author unknown
hardness
hardness
November 22, 2011
https://www.geology.ucdavis.edu/iype/jan/diamond.jpg
Rocks and Minerals.pptx
Rocks and Minerals.pptx
Novmeber 22, 2011
google docs
Author unknown
hardness
hardness
November 22, 2011
https://www.geology.ucdavis.edu/iype/jan/diamond.jpg