the diamond has no streak because it is the hardest mineral
Diamonds Have No Streak AT All..
The streak of a diamond is transparent.First of all, diamond is spelled 'diamond'. Next, diamond might seem like it has a streak when it scratches something but that is only a scratch. Diamonds do not have a streak.
Diamond will not leave a streak on a porcelain streak plate because diamond is harder than the streak plate. It will leave a scratch on the streak plate for the same reason.
A streak plate has hardness of 7 on the Mohs scale, so harder minerals will not leave a streak. Diamond has a hardness of 10 and corundum is 9 - so neither will leave a streak.
When identifying minerals, having no streak is a property of hardness. A streak plate has a hardness of ~7(Moh's Scale). Thus any mineral having a hardness greater than 7 will have no streak.Metallic is the description of luster. Or the general appearance of a mineral surface in reflected light.If you were refering to the mineral having metal elements in it, streak is actually very useful for identifying them. Many minerals that are composed of non-metals have a white streak which can appear to be no streak, however there are also many minerals with no streak which are composed of non-metallic minerals (Diamond).
The streak for a diamond is colorless.
Diamonds Have No Streak AT All..
The streak of a diamond is transparent.First of all, diamond is spelled 'diamond'. Next, diamond might seem like it has a streak when it scratches something but that is only a scratch. Diamonds do not have a streak.
Diamond will not leave a streak on a porcelain streak plate because diamond is harder than the streak plate. It will leave a scratch on the streak plate for the same reason.
Diamond does not streak. Anything with a Mohs hardness greater than about 7 will cut the ceramic plate used for the test. Diamond, the hardest naturally occurring substance, has a Mohs hardness of 10. (Nothing else in nature comes close.)
white streak
The streak of diamond is white; quantity -- how much -- isn't a factor.
It doesn't leave a streak.
According to Galleries dot com, diamond streak is white.
diamond
Topaz (8), corundum (9), and diamond (10).
A streak plate has hardness of 7 on the Mohs scale, so harder minerals will not leave a streak. Diamond has a hardness of 10 and corundum is 9 - so neither will leave a streak.