Mohs scale of mineral hardness helps define the strength of minerals and natural stone, and is often referenced in countertop design and manufacturing. 

The scale is based on one stone or mineral’s ability to scratch another mineral. A very simple test, a rating is determined by taking one material and scraping it on another. If the material is able to produce a visible scratch on the other, it is considered harder. The scale was created by mineralogist, Friedrich Mohs in 1812.

Numbers are assigned to minerals based on their hardness. The higher the number, the harder the mineral is. While harder elements have since been discovered, Mohs original scale is still used as a guideline.

Mohs scale:

• Talc - 1
• Gypsum - 2
• Calcite - 3
• Fluorite - 4
• Apatite - 5
• Feldspar - 6
• Quartz - 7
• Topaz - 8
• Sapphire - 9
• Diamond - 10 

Using a very simple comparison of materials, the results have proven to be reliable, and the test is easy to conduct in the field. Mohs scale also includes items such as a fingernail, which has a hardness of 2.5; a copper penny (3.5) and a window’s glass (6.5).

Which the scale doesn’t directly relate to countertops, it is often a consideration for homeowners and designers who are concerned with countertop strength and scratch resistance. According to Mohs scale, popular countertop materials would be rated and ranked in this order:

• Soapstone - 1
• Marble - 3-5
• Limestone - 3-5
• Sandstone - 6-7
• Granite - 6-8
• Quartz - 7-8

Of course, keep in mind there are varying degrees of hardness and quality within each stone type. For example one slab of granite could be rated a 6 on Mohs scale, while another slab could be an 8. Also, there are many manufacturing methods and other factors involved in countertop production that determine the true hardness. Generally, Mohs scale is a good guide, however.

If you’re looking for a very durable countertop that is scratch resistant, quartz and granite are top choices for kitchen countertops, bars and bathroom vanities. 

If you have questions about natural stone countertops, or which stone is best for your project, give us a call:

Polished granite has a shiny, glossy finish. This option is very common for countertops because the polished look brings out a wide range of colors that compliment the design of many kitchens and bathrooms. 

After polishing the stone it becomes darker, and the colors more rich. The granite surface also becomes somewhat reflective. It’s an elegant look, and because of the many color options granite provides it can easily match any design style.

Granite is usually polished by the fabricator before it is installed, but it can be repolished after installation. Re-polishing will be necessary every 5-10 years, depending on the amount of use the stone gets, and if any damage occurs. Some homeowners re-polish their own countertops with a variable speed buffer, but it is a bit of an art, so many people opt to hire a countertop expert to refinish the stone.

As far as durability and maintenance, there aren’t huge differences between the two. Both are very strong, and virtually scratch resistant. Honed granite is more porous, so it will require slightly more frequent sealing (again, depends on usage). Polished finishes are more likely to show blemishes, because the glossy will be worn down in damaged areas. But with proper maintenance and care, both are great choices for a kitchen or bath.
​
Many homeowners choose between polished and honed granite based strictly on their design preference. Polished is the default option, but for homes with a more rustic or subtle aesthetic, a honed surface may be a better match.

If you’d like to see the difference between these two finishes in person, visit our showroom in west Wichita. ​

If you have a spot of super glue, Crazy Glue or Gorilla Glue on your quartz countertop, don’t worry, it can be removed.  

These fast drying glues tend to adhere to quartz quickly and firmly, so it’s not likely that soap and water will work, but start there. Use warm water and a soft rubber or plastic edge to gently scrap the spot (e.g. rubber spatula or plastic baking scraper).

If that doesn't do the trick you’ll need three things:

1. A new razor blade
2. Acetone and
3. Some soft towels or cotton pads.
   
   

First, mix the acetone with water, 50% water to 50% acetone. Use this mixture for the following steps. 

Put some of the acetone/water mixture on the pad or towel and get the glue damp. Try to keep the acetone only in the area of the glue, allow it to sit for a few seconds. (Do not allow acetone to sit on the quartz surface for long periods of time.)

Holding the razor blade almost flat (try for less than 45 degrees to the surface) very gently scrape the glue. Use a light touch, it should start coming off almost right away. Don't press the blade into the counter, just slide it across the surface and let find its way under the glue.

Watch the surface closely as you are scraping, look at it from different angles. Adjust your angle and the lighting will help you ensure you're getting all of the glue and not scratching the countertop.

Repeat the acetone application and scraping until all of the glue is gone. Immediately wipe up any excess acetone when complete. 

Lastly, thoroughly clean the countertop. Use a mild soap and warm water mixture, or a quartz-safe cleaner. 

While this is an aggressive, and slightly risky tactic (remember, quartz is scratch resistant, not scratch proof), if you’re dealing with hardened glue, it may be your best option. Just take your time and be gentle, and that glue will be gone for good. 

Note, you should check with your manufacturer to ensure it is safe to use acetone on your particular brand of quartz, while this is generally fine, the use some chemical products may not be supported by your warranty.

Granite or quartz are your best bets for a bar top.

A bar top requires a durable material that can withstand the impact of glass bottles, and the risk of scratches from corkscrews, bottle openers and sharp bottle caps.

For this reason, it’s best to stay away from softer stones such a marble and soapstone which are more likely to scratch and chip. You may also want to avoid very porous stones like limestone, as you’re sure to have some spills. A porous stone will be more susceptible to stains and etching when liquids interact with the stone.

Granite or Quartz are probably the best options for an indoor bar top. Both are extremely durable and they are available in a wide range of colors and styles that should suit any design. 

Granite bar top benefits

• Virtually scratch proof
• Stain resistant
• Excellent heat tolerance
• Very durable
• Available in a huge number of colors
• Earthy, organic aesthetic

Granite may require sealing periodically (yearly) to ensure liquids do not penetrate the stone. This is a simple process that can be done by the homeowner, or by a stone countertop professional. Check with your stone manufacture to determine if, and how often you may need to seal the stone.  

Granite bar top benefits

• Stain resistant
• Scratch resistant
• Good heat tolerance
• Does not require sealing
• Easy to color match
• Modern aesthetic

Quartz is harder and more durable than granite, and it does not require sealing (less maintenance), however granite is more scratch proof and has a higher heat tolerance.

Granite and quartz are similar in price, about $45-$125 per square foot installed. A common sized bar might cost around $2000, thought your stone selection, exact dimensions and required cutouts will impact the exact price.

Both of these stones are excellent choice for a bar top. The differences are fairly minor, and many homeowners will make their decision based primarily on the look. Granite is often used in more elegant settings, while quartz is more modern and/or minimalist. Visit our showroom to the differences between the two. If you'd like to learn more about these stones, you can also visit our FAQ pages - Granite and Quartz.