No.because calcite is softer then feldspar
Diamonds are proven to scratch all minerals including itself.
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.
gypsum can
The human fingernail can just scratch gypsum, but is softer than all other minerals.
it can scratch fluorite
Yes it can.
n
yes
The copper of the penny will rub off the file
steel file 6.5
No.because calcite is softer then feldspar
No. Diamond will scratch steel, however,
Diamond is the hardest naturally occurring mineral and can scratch all other minerals. Talc is the softest of minerals and cannot scratch any other mineral.
Diamond is harder than steel: you can scratch steel with a diamond, but steel will not scratch a diamond.
Diamonds are proven to scratch all minerals including itself.
Talc is supposed to be too fragile to cause a scratch on the majority of minerals.