How to Identify Granite and Marble

Views:5     Author:Site Editor     Publish Time: 2017-10-16      Origin:Site

                                       How to Identify Granite and Marble

As a cleaning business owner, you've probably had to deal with cleaning some form of granite or marble, whether it's flooring, counter tops or maybe even showers and wall surfaces.

If you're not familiar with how to care for these stone surfaces, you might be inclined to think that they need to be cared for in the same way. However that's a misconception because granite and marble are very different in their geology.

So it would benefit you as a cleaning business owner to know some of the differences between granite and marble.


Granite

Marble

Durability

Durable

Less Durable

Resistant to   acidic foods

Mostly

No

May be damaged   by cleaning liquids

Yes, depending on ingredients. Use   gentle dish soaps.

Yes, depending on ingredients. Use   gentle dish soaps.

Porous

Yes

Yes

Cost

$40 to $150 per square foot, including   the cost of installation. Cost varies according to color and general   appearance.

$40 to $150 per square foot, including   the cost of installation. Cost varies according to color and general   appearance.

Stainable

Yes

Yes

Usable   outdoors

Yes

Yes, with proper sealants

Heat resistant

Yes

Yes

Scratch   resistant

Mostly

No

Low   maintenance

Yes, but clean up spills immediately and   reseal once every two years. Lighter-colored granites, which are more porous,   may require additional maintenance.

Less so than  Granite. Clean up spills   immediately and reseal twice a year.

Surface

Granite is an igneous (formed by extreme heat) rock, which is a much harder stone. Therefore it may need harder abrasives for refinishing.

Marble is a much softer stone than granite. Marble is a metamorphic rock containing calcium carbonate, which reacts to acids.

sitting-room-marble-wall.jpg

How to Identify Granite and Marble.jpg

    Applications

Granite's durable nature makes it suitable for kitchen countertops and floors, while marble is more appropriate in areas with less traffic, like bathrooms, where it can be used for vanities, tub decks, shower walls, and flooring. Marble can create a light and unique look and can be good for surfaces that will not get much use, or for people who are willing to put in the maintenance work and do not mind if their surfaces have a bit of character over time.

Health Risks

Some granite may contain trace elements of naturally-occurring, radioactive radium, uranium, and thorium. Over time these elements can decay and emit radon, a noble gas that, at high enough levels, can lead to lung cancer.

Tips to identify marble

Do the Knife Test

Authentic marble is a metaphoric rock formed by applying heat to limestone, forming crystals of calcite, a relatively soft mineral,If you scratch a knife across an inconspicuous area or on the underside of the slab and it shows little or no damage, you are looking at the more durable granite

The Shine and Sheen

The glossiness of a true marble is one of its most desirable attributes and distinguishable characteristics.

Check the Coloration

While the coloration of marble can vary from pristine white to black, the natural stone comes in subtle shades of coloring rather than stark colors.

Look for Veins

natural marble will show its impurities through long sinewy streaks. Granite often has similar color variegation, but the secondary coloration in granite will look more like clouds than streak.


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