A rock may or may not be expensive, depending on what the rock is made of.
Sandstone is a sedimentary rock as is limestone. Marble is a non-foliated metamorphic rock and granite is a felsic intrusive igneous rock.
Igneous Rock molten rock igneous rock is when it cools.
A rock that is formed when magma cools is called a igneous rock.
Melted rock is that hasn't surfaced is "Magma".If the melted rock already has surfaced, it is called "Lava".
mobiles are expensive because they are high in technology and are quite easy to use for contacting a friend or family you can use it for the time, date or play games on it so that's why the mobile is quite expensive
Yes, rock drills are usually diamond tipped and are very expensive.
No it is not
Very
diamond
diamond
it is a really expensive rock that's really old and rare
don't know
of course, diamonds are expensive , you can sell it and get a lot of money
Granite is more expensive as it is made under the earth (metamorphic rock) and harder to extract than sandstone which is a sedimentary rock
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hard rock
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