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Pitchstone is a rock; and therefore doesn't have a single hardness. Obsidian is technically not a mineral as it doesn't have a crystalline structure, however it isn't a mixture and has a hardness of roughly 5 - 5.5.
On Mohs scale of hardness, obsidian is about 5, which can just be scratched with glass.
What else can I help you with?
What is the hardness of Flint according to the mohs scale of hardness?
flint is a type of quartz, so it has a hardness of about 7 on the mohs scale of hardness
What is the hardness of diatomite on the mohs scale of hardness?
Diatomite has a hardness of around 5.5 on the Mohs scale of hardness.
What is the name of the mineral hardness scale?
It's called the Ore
What is the hardness of azurite on the MOHS hardness scale?
Azurite has a hardness of 3.5 to 4 on the Mohs hardness scale.
What is the hardness of dolomite on the MOHS hardness scale?
Dolomite has a hardness of 3.5-4 on the Mohs scale of hardness.
What is the hardness of Flint according to the mohs scale of hardness?
flint is a type of quartz, so it has a hardness of about 7 on the mohs scale of hardness
What is the hardness of diatomite on the mohs scale of hardness?
Diatomite has a hardness of around 5.5 on the Mohs scale of hardness.
What is the name of the mineral hardness scale?
It's called the Ore
What is the hardness of Limonite on the mohs hardness scale?
The hardness of Limonite is 4 t0 5.5 on the mohs hardness scale.
What is the hardness of azurite on the MOHS hardness scale?
Azurite has a hardness of 3.5 to 4 on the Mohs hardness scale.
what hardness of quartz?
According to the Mohs hardness scale, Quartz is assigned with the hardness 7.
What is nickel hardness on MOHs scale?
Nickel has a hardness of 4 on the Mohs scale.
What is the mohs hardness of scale of limestone?
The hardness is 3-4 on Mohs scale.
What is the hardness of dolomite on the MOHS hardness scale?
Dolomite has a hardness of 3.5-4 on the Mohs scale of hardness.
A scale used to measure the hardness of rocks?
The Mohs scale is used to determine the relative hardness of minerals.
What was F. Mohs scale called?
This scale was proposed by the Austrian geologist Friderich Mohs.
Where is aluminum on mohs hardness scale?
Aluminum Oxide is roughly 8.5 - 9.0 on the hardness scale.
