alicante red marble
The texture,materials,age, and size/weight determine the rarity of a marble
Tajmahal is made of finest quality of marble called Makrana Marble which is rare now. It is more than marble white.
Because they are so rare.
Marble is metamorphosed limestone.
I would not call it "rare" but it's not very common. It's metamorphosed limestone so associated with major orogenies.
This all depends on the color. There are rare granite countertop colors that are more expensive than some marble countertop colors, and vice versa.
Most marbles are not rare. Most marbles are decorative and not really even marbles. It is always good to check the value of the specific marble you have to see if it is real or worth anything.
I think you are referring to "sterling marble" -- this is a very attractive multi-colored stone used for floors in homes-- usually for kitchens and bathrooms. It may not be rare, but it does enhance the value of a home by making it more beautiful.
Roman statues were usually made of bronze or marble. A few statues were made in gold, but hey were extremely rare.
A marble statue is a statue made of marble :)
marble