A few minerals that do not scratch glass come to mind . . . talc, asbestos, mica, for instance.
Diamond is the hardest mineral that can scratch a steel knife or window glass.
A mineral that will scratch with a window glass but not with a knife blade is a mineral with a hardness between 5.5 and 6.5 on the Mohs scale, such as orthoclase or peridot.
Quartz will scratch glass, as its hardness is usually around 7. Pyrite, on the other hand, has a hardness of 6 to 6.5, meaning it would not be able to scratch glass.
Diamond is the only mineral that can scratch glass but not leave a streak on a streak plate. Glass has a hardness of around 5.5 on the Mohs scale, while a streak plate typically has a hardness of around 6.5. Diamond, with a hardness of 10, is able to scratch glass but not the streak plate.
Between 3.5 and 5.5 on the Mohs scale of mineral hardness.
Diamond is the hardest mineral that can scratch a steel knife or window glass.
A mineral that will scratch with a window glass but not with a knife blade is a mineral with a hardness between 5.5 and 6.5 on the Mohs scale, such as orthoclase or peridot.
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The mineral that can scratch glass but can be scratched by a steel file is quartz. Quartz has a hardness of 7 on the Mohs scale, allowing it to scratch glass, which typically has a hardness of around 5.5. However, a steel file, which has a hardness of about 6.5 to 7, can scratch quartz.
Quartz will scratch glass, as its hardness is usually around 7. Pyrite, on the other hand, has a hardness of 6 to 6.5, meaning it would not be able to scratch glass.
Diamond is the only mineral that can scratch glass but not leave a streak on a streak plate. Glass has a hardness of around 5.5 on the Mohs scale, while a streak plate typically has a hardness of around 6.5. Diamond, with a hardness of 10, is able to scratch glass but not the streak plate.
Fluorite is a mineral that is harder than calcite but won't scratch glass. Calcite has a hardness of 3 on the Mohs scale, while fluorite has a hardness of 4. However, glass typically has a hardness of about 5.5, making it too hard for fluorite to scratch.
A mineral that cannot scratch glass but can scratch an iron nail has a hardness between 5.5 and 6.5 on the Mohs hardness scale. Glass typically has a hardness of around 5.5, while iron nails generally have a hardness of about 4.5. Therefore, the mineral's hardness falls within this range, indicating it is harder than the nail but softer than glass.
Between 3.5 and 5.5 on the Mohs scale of mineral hardness.
Your answer depends on the composition of the 'fake diamond' and the composition of glass. Each mineral has a rating on the Mohs Scale of hardness. The harder mineral will scratch the softer mineral.
A diamond has a hardness of 10 on a scale of 10 known as Mohs Hardness Scale. A diamond can scratch any other mineral. It isn't the only mineral that can scratch glass thou, quartz, corundum,garnet, among others
The mineral would have a hardness between 5.5 and 6.5 on the Mohs scale. It cannot scratch glass (hardness of about 5.5) but can scratch an iron nail (hardness of about 4). This places it in the range of minerals like orthoclase feldspar or apatite.