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GRANITE - (IGNEOUS STONE)


Quartz: A brilliant, hexagonally crystalline mineral, silicon dioxide-transparent.
Feldspar: Crystalline minerals made up of aluminum silicates.

Potassium: Soft, silver-white, wax like metallic chemical element that oxidizes rapidly when exposed to air.

Hardness scale: 7 (10 being the hardest)

ONYX - (METAMORPHIC STONE)


A translucent, crystalline calcite stone found in cave deposits.


Hardness scale: 3 (10 being the hardest)
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MARBLE - (METAMORPHIC STONE)


Calcite: A mineral found in the form of limestone, chalk and marble.

Dolomite: A common rock forming mineral, harder than calcite.

Magnesite: A mineral, which is generally white.

Magnesium carbonate similar to calcite.

Hardness scale: 3 (10 being the hardest)

TRAVERTINE - (SEDIMENTARY STONE)


A cream or reddish color formed by the accumulation of calcite from limy springs, lakes or streams.

Hardness scale: 3 (10 being the hardest)
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LIMESTONE - (SEDIMENTARY ROCK OR STONE)


A rock which consists of calcite, it is composed of the organic remains of sea animals, corals etc.

Hardness scale: 3 (10 being the hardest)

SLATE - (METAMORPHIC STONE)


A fine-grained rock formed from clay, sedimentary rock shale and sometimes quartz.

Hardness scale: 3 (10 being the hardest)
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SOAPSTONE - (SEDIMENTARY STONE)


A dense material that wears well. A rock formed by a variety of talc.

Hardness scale: 1 (10 being the hardest)