Diamond
Diamonds is not a stone it's crystal actually. But the hardest stone is granite stone.
Diamond is the hardest precious stone
the hardest precious stone is the diamond
Granite is generally considered to be more durable and stronger than marble. Granite is a harder and denser stone, making it a popular choice for high-traffic areas such as kitchen countertops. Marble is more prone to scratching and staining due to its softer nature.
A gravestone can be made from any hard wearing stone such a granite or marble.
marble,granite,stone
Granite and gray marble.
The hardest gemstone is the diamond.
Using Mohs scale of hardness for minerals, you can--with a bit of detective work--find out the hardness of Granite, Limestone and Marble.But I think that we can do a bit of reasoning and figure out for ourselves the order of hardness for these stones.First off, knowing that Limestone is a sedimentary stone, Granite is a metamorphic stone and Marble is igneous stone, can give you some idea how these stones measure against each other in hardness.Alright, sedimentary stone is laid down, layer on top of layer, until it compresses enough to create a stone. Then igneous stone is created by magma being cooled and becoming a solid stone. Metamorphic stone is changed--with pressure and heat, creating a metamorphosis to another stone entirely.Thinking how each of the stones, which do you think would be the softest, the hardest, then the one left would be between the two others.I would deduct that Limestone would probably be the softest, as it is layer upon layer--not really going through much change or pressure to become Limestone. Now, to figure out which of the two left over might be the hardest. I would suggest the stone which has gone through the most heat and pressure would be the hardest. The stone which qualifies as the most changed, would be the metamorphic rock, Granite. What you have left over, is the igneous rock, Marble. To check if that truly would be the middle hardness, it was created with heat, which would be more "processing" than just layered like Limestone, but wasn't as "processed" as heat AND pressure as Granite was. So it appears that Marble would fit between Limestone as the softest, and Granite as the hardest.Now you have deduced how to determine the order of hardness between Limestone, Marble and Granite.
Granite and Marble.
Marble is a very hard stone. Even though it is harder than limestone it is not as hard as granite.
It varies - depending on the task. Common materials are... sandstone, granite and marble.