No
steel file 6.5
it can scratch fluorite
Muscovite is a silicate mineral.
Muscovite has perfect basal cleavage, or book cleavage.
No
n
yes
The copper of the penny will rub off the file
steel file 6.5
No. Diamond will scratch steel, however,
Diamond is harder than steel: you can scratch steel with a diamond, but steel will not scratch a diamond.
Topaz has a hardness of 8 on the mohs scale.A steel file has a hardness of 6.5, or maybe 7+ if it has been hardened.In theory, the topaz is likely to be harder than the average steel file.=== === ...you may want to avoid putting this to the test, because, although you might scratch the steel file with the topaz, you might also just damage your topaz in the process, because, who knows, maybe your steel file is made of best high-carbon steel, which has a hardness of 8 on the mohs scale!And then there are steel files that have a layer of tungsten-carbide welded to the cutting surface. Tungsten-carbide has a mohs rating of 8.5 to 9! * For more information, see 'Related links' below this box.
it can scratch fluorite
If the appliance is stainless steel, a scratch can be improved by using a stainless steel scratch removal kit. Scratch-B-Gone, and Rejuvenate Stainless Steel Scratch Eraser Kit are both products that can improve the appearance of a scratch or dent in an appliance.
lots of metals scratch eaily including copper steel and iron :)
the blade would be stronger because the copper would brake easier