Taaffeite, $1500-$2500 Per carat. It is the most precious gem in the world as of now
gold
Most Earth rock is igneous or metamorphic even though visible surface bedrock is mostly sedimentary. Of the total Earth rock volume, only a tiny fraction is sedimentary.
No. The most common rock found on the surface of the Earth is sedimentary rock, and in particular, shale, sometimes referred to as mudrock).
d. on the surface of the Earth
forces inside earth
Igneous rock forms when melted rock (magma) from inside the Earth cools.
diamond
diamond
Granite is more expensive as it is made under the earth (metamorphic rock) and harder to extract than sandstone which is a sedimentary rock
Sedimentary rock covers most of the earth's surface. It makes up 75% of all the rock on the earth.
U 2
While it doesn't cover most of the earth's surface in general, Sedimentary rock covers most of the earth's Landsurface.
The iPhone 4
The type of rock that makes up most of the Earth's crust is igneous. It is the most common rock type because it has been forming billions of years ago, along with most formations on Earth.
Basalt is the most common rock thought of as a link in lithology between the Earth and the moon.
the rock cycle
A rock may or may not be expensive, depending on what the rock is made of.
Diamond.