Get matched with top stone countertop pros in Calvert, TX

Natural stone is formed in deep layers of the Earth through natural processes over thousands of years. The solid composition formations become massive rock beds, or quarries, from which miners extract them.

The cost to install a kitchen island ranges from $900 to $6,500, with an average price of around $4,800. The final cost depends on whether you buy a prefabricated unit or have one custom-built. Prefabricated kitchen islands are generally cheaper. A simple prefabricated cart can cost between $150 and $900, while a permanent, stationary prefabricated island costs from $900 to $5,000. A custom-built kitchen island averages around $4,800 but can cost $10,000 or more depending on factors like materials, size, design complexity, and accessibility.

Marble countertops cost $3,000 on average, ranging from about $2,000 to $5,000, depending on the type of marble, square footage, location, and whether you use tiles or slabs. Another major cost factor to consider is the grading of the marble, which determines its quality level.

Use this grading system when selecting marble for countertops:

• Grade A: Nearly perfect with subtle veining

• Grade B: Minor flaws such as pits, fissures, or blotches

• Grade C: Minor and major flaws like chipping and cracks requiring repair

• Grade D: Significant damage needing repair, with dark veining and pronounced colors

Quartzite is more expensive than granite, largely because of its rarity. Granite is naturally more common. A granite slab generally costs $40 to $60 per square foot (excluding super-rare types), while quartzite slabs cost anywhere from $50 to $150 per square foot. 

With both materials, it’s usually more affordable to purchase stones that are readily available in your location. You may need to import other stones, which come at a higher cost.