formed
uses
found
famous rocks
most expensive
100
Igneous rocks are formed from melted rock deep inside the Earth.
What is how ingenious rock formed?
100
(Limestone) (Sedimentary Origin)
What is making cement?
100
ocean to deserts to caves
what is sedimentary rocks?
100
Rock found in Massachusetts
What is Plymouth rock ?
100
Worth $1,200 and found in Northern Tanzania
What is Tanzanite ?
200
Sedimentary rocks are formed from layers of sand, silt, dead plants, and animal skeletons.
What is how sedimentary rocks formed?
200
(Sandstone) (Sedimentary Origin)
What is building materials?
200
buried below the surface and covered with sedimentary rock, or are buried beneath the ocean water.
What is ingenious rocks?
200
Found in ireland
What is Blarney Stone?
200
Worth $2,000 and found in Mexico
What is Fire Opal?
300
Metamorphic rocks formed from other rocks that are changed by heat and pressure underground.
What is how metamorphic rocks formed?
300
(Pumice) (Igneous Origin)
What is bath scrub?
300
deep within the Earth or where tectonic plates meet
What is metamorphic rocks?
300
Found in England
What is the Rosetta stone
300
Worth $3,024 and found in Lightning Ridge, New South Wales, Australia.
What is Black Opal
400
Daily Double
formed of a rare igneous rock, phonolite porphyry and a small intrusive body formed by magma which cooled underground and was later exposed by erosion 
What is how was devil's tower formed?
400
(Granite) (Igneous Origin)
What is kerb stone?
400
subterranean (underground) cavities
What is crystallization?
400
Found in Saudi Arabia
What is Black stone of Kaaba?
400
Worth $20,000 and found in Myanmar, New Zealand, Canada, Taiwan, Guyana, Surinam, southern Europe, Russia and China.
What is Jadeite?
500
Daily Double
Found in Australia and has two UNESCO world heritage listings
What is Uluru?
500
(Slate) (Metamorphic Origin)
What is roofing material?
500
Lightning Ridge in New South Wales, Australia
What is black opal?
500
Found in Italy
What is the Sword in the Stone?
500
Sold for $57.5 million and found in the Cullinan mine in South Africa, an Indian mine in the 17th century Golcondo Sultanate, and the Argyle mine in Western Australia.
What is Blue Diamond?