Dolomite, also known as dolostone and dolomitic marble, is a sedimentary rock composed primarily of the mineral dolomite. It is thought to form by the post-depositional alteration of lime mud and limestone by magnesium-rich groundwater.
The trend for white and gray lends itself to the typical Dolomite colors. The Dolomites are slightly harder than average marble but are much softer than granite, therefore they can scratch. Dolomites make a great looking countertop and can be used in the kitchen, bathrooms, etc., but don’t expect the same performance as a harder stone like granite or quartzite. In terms of performance, you’d be better to think of Dolomite as a marble. Like most natural stone is porous and needs to be sealed to prevent staining.