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Limestone is composed mainly of calcite and occurs in thick extensive, multiple layers. It is formed in shallow seas from a combination of calcium carbonate or the accumulation of shells and skeletons of calcareous marine organisms. Limestone is abundant and is very important commercially as it has a number of different uses as a building stone, cement and as a raw material in the glass manufacturing process. Limestone that is recrystallized under heat and pressure becomes marble.

Limestone Polished
Limestone Classification
Common Name Limestone
Species Rock
Limestone Optical Properties
Transparency Opaque
Pleochroism None
Limestone Characteristic Physical Properties
Luster Dull
Cleavage None
Limestone Chemistry & Crystallography
Chemical Formula calcite, aragonite, dolomite, siderite, quartz and pyrite
Crystal System NA
Chemistry Classification Rock

Limestone Colors

  • Yellow Limestone Yellow
  • Brown Limestone Brown
  • Gray Limestone Gray
  • Pink Limestone Pink
  • White Limestone White

Countries of Origin

Unknown; China; Brazil; Germany

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Tim Matthews


Tim Matthews

Tim Matthews is President and Chief Executive Officer of Jewelry Television® (JTV), as well as a member of the company's Board of Directors. He oversees and leads all aspects of the company's powerful omni-digital retail platform that uniquely specializes in fine jewelry and gemstones. His passion for business and gemstones has led him to become a recognized expert in the field of gemology. He is a life member of the Gemmological Association of Great Britain (Gem-A) and has earned Gem-A's highest degrees, the Gemmology (FGA) and Diamond (DGA) diplomas. He is also a Graduate Gemologist (GG) of the Gemological Institute of America (GIA) and has also completed GIA's Graduate Diplomas in Diamonds, Colored Stones and Pearls. Under his leadership, JTV has become the leader in the sourcing and selling of color gemstones and jewelry.

This page was created on June 27, 2014.

This page was last edited on October 24, 2019.