Marble vs. Granite
What is Difference between Marble and Granite? When it comes to deciding about kitchen counter tops, granite and marble is the first two materials that come to mind, perhaps because they are the two most popular options. In spite of being very good materials for this particular use, the fact are that both are susceptible to have some stains and scratches remain over time. Now, it is good that you understand the difference between marble and granite because each one has particular characteristics that you need to know in order to choose the alternative that suits you.
Difference between Marble and Granite
Physically the appearance of granite is very different from that of marble. This one is moteado that is to say that it seems that it has many freckles of colors; this due to the various stones (feldspar, quartz and biotitic mica) embedded in it. Generally granite comes in colors darker than marble and is also harder and more resistant. Also, the granite is also brighter. Because of its greater strength, granite is used more frequently than marble; both for kitchen countertops and floors.
Note: Some types of granite may contain elements of a radioactive nature, such as radium, uranium and thorium. Over time these elements can decompose and emit a noble gas called radon, which can cause cancer if it is at high levels.
On the other hand, the marble looks more delicate than the granite. It is usually found in lighter colors such as grayish white, cream or white with dark veins. There are other varieties in greenish and pink color, but these are quite rare.
Marble, like granite, is porous but less resistant than the latter and stains and scratches are more visible on its surface. It is composed of mineral impurities such as silt and iron oxides. Unlike granite (which is shiny), the marble finish is matte and acquires an appearance of softness and delicacy; but a special varnish is now being sold to give it a shine.
The marble is especially susceptible to heat and acids, for this reason its use is more limited to the bathroom and other less frequented places of the house; not so much in the kitchen. With the passage of time, the marble becomes inevitably more muted; but if given good maintenance this process can be delayed much longer.