Diamond is number 10 on the Mohs scale, and is 40 times harder than Corundum, which is number 9 on the Moh's scale. It also has the most dense atom ical configuration of any mineral, and is transparent over the greatest number of wavelengths.ISTINGUISHING SIMILAR MINERALS. The only mineral that can possibly be be confused with Diamond is waterworn Quartz pebbles which may resemble waterworn Diamonds, but the hardness and luster of Diamond will easily differentiate the two.
.A disconformity is an unconformity between parallel layers of sedimentary rocks which represents a period of erosion or non-deposition.
The word discontinuity has multiple meanings in geology. In sedimentary geology, a discontinuity is a break in sedimentation that produces a time gap in the sediment record. In seismic science, a discontinuity is a surface (such as the boundary between rock units) where seismic waves abruptly change velocity.