Distinguishing Granite from Quartzite

Distinguishing Granite from Quartzite

November 24, 2023 Fred Hueston Comments Off

Distinguishing Granite from Quartzite

Frederick M Hueston  StoneForensics.com

Granite and quartzite are both popular choices for countertops, flooring, and other decorative applications due to their hardness and natural beauty. Despite their similarities, there are distinct features that set them apart.

Visual Characteristics

The most noticeable difference lies in their appearance. Granite is known for its flecks of darker colors like black, brown, or green, offering a variety of styles and patterns. Quartzite, in contrast, displays more subtle, flowing color variations. Granite’s diversity in styles outshines quartzite’s more uniform look.

Measuring Hardness

When it comes to hardness, quartzite slightly surpasses granite. This is measured using the Mohs scale of hardness, a system that evaluates the scratch resistance of minerals. Quartzite scores around 7, whereas granite ranges between 6 and 6.5. This higher rating indicates that quartzite is more resistant to scratching and general wear.

Crystal Composition

Another distinguishing factor is the crystal structure within the stones. Granite is characterized by a variety of crystals, not veining, giving it a unique sparkle and texture. Quartzite, however, tends to have a uniform structure and lacks the crystal inclusions found in granite.

Price Comparison

In terms of cost, pure quartzite generally commands a higher price than granite. This is attributed to quartzite’s superior hardness and durability.

Understanding these key differences aids in distinguishing between granite and quartzite. Both are excellent choices for those seeking a durable and attractive natural stone. However, for those with budget constraints, granite may be the more cost-effective option.