Stone 101 Page 2

Stone 101 - An Introduction to Natural Stone
Page 2 of 5

When thinking about natural stone’s qualities, no one characteristic is more vital than the stone’s beauty. This trait is the sum total of natural stone’s unique, enduring and timeless qualities. The variation in texture and color from one stone to the next, the stone’s innate ability to en-dure and the intrinsic value of a design that promotes aesthetics from era to era all prove natural stone to be an asset to any project.


Natural Stone Fundamentals

All of the products Kirby Stone Company provides are classified as sedimentary rock, a class of stone deriving from the break-up of pre-existing rock and other organic elements of the earth. As these broken pieces accumulate over time, they form rock beds, and af-ter millions of years of pressure and heat from the earth, the pieces bond together. The end product varies and can be identified by the unique composition of each type.

Limestone primarily consists of calcitic material, a noticeably finer grained material including the sediment of marine organisms. These finely-grained materials accumulate to create a smooth, granular surface. Limestone will react to slightly acidic solutions, including vinegar, due to the calcium carbonate within the limestone.

Sandstone is a very durable formation of quartz grains (sand) often bonded together with clay or similar matter from the earth. This type of stone is usually formed in colors similar to those of the earth and sand, including reds, browns and yellows, and any distinguish-ing characteristics within the color can usually be correlated the re-gion in which the sandstone was found.

Limestone and sandstone are easily distinguishable, as limestone typically possesses a white, chalky appearance, and sandstone more commonly has a grainy appearance with colors closer associated with Autumn and the natural colors of the earth, including browns, yellows and reds.

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