About Earthstone

Earthstone International is a US based manufacturer of foamed glass products. We recover glass from US landfill sites and recycle it to create environmentally responsible cleaning and sanding products that work. Earthstone was founded in 1995 by Gay Dillingham and Andrew Ungerleider to create an eco-friendly alternative to pumice without having to use the conventional process of strip-mining in the mountains in New Mexico and elsewhere.

Over the years, Earthstone has evolved into a professionally managed company that has developed, manufactured and supplied its customers with products that can be used for barbecue grill, kitchen, and bathroom cleaning as well as sanding. Earthstone sells to both the residential and commercial markets.  We have a strong commitment to the natural environment and design all products to meet strict environmental and safety requirements. This commitment has earned us the Green America seal of approval and Green Clean Institute certification. In addition, we make all of our products in the USA at our plant in Santa Fe, New Mexico.


How our products are made:

  1. Recycled glass is taken from landfills.
    Did you know that most municipalities in the United States don’t truly recycle glass? The process to melt glass and form it into reusable material can be incredibly costly, so the glass that is turned in for recycling is mainly used in public art and for other similar projects. The rest is usually crushed and added into landfills anyway. Earthstone buys this crushed recycled glass to save it from being added to landfills.
  2. Glass flour is made & mixed.
    Earthstone grinds the recycled glass into a fine powder that feels like baking flour. Next, we mix it with a proprietary foaming agent that helps the glass flour rise like bread when it is baked.
  3. Foamed glass is baked, cooled, & cut.
    The glass flour is baked in our specialized kiln in Santa Fe, New Mexico at temperatures as high as 1600 °F. The baking and cooling process takes two full days, and then we cut and wrap the individual stones listed for sale on our site. Industrial products are made in a similar fashion.

Mission & Vision

Earthstone’s mission is to reduce the need for strip-mined minerals by producing high quality, effective, and environmentally-friendly alternative products for a variety of commercial and household uses.

Earthstone’s vision is to make the largest positive environmental impact possible by becoming a leading developer and producer of products that use recycled glass as innovative solutions to the world’s problems.

Environmental Certifications

 In 2011, Earthstone was recognized as a Green Clean Certified company by the Green Clean Institute. The GCI focuses on certifying companies that demonstrate the ability to provide effective cleaning that is also good for the health of your home and the natural environment.  Learn more on the Green Clean Institute website. (link is external)

Earthstone's GrillStone, BathStone, KitchenStone, and QuikSand products have also been awarded the Environmental Protection Agency's Design for the Environment certification. This means the products are recognize for safer chemistry, and our company is committed to environmental protection, worker and consumer safety, resource conservation, and customer education. Visit (link is external) to learn more.

"EPA/DfE recognition does not constitute endorsement of this product. The Design for the Environment logo signifies that the formula for this product, as Earthstone has represented it to the EPA, contains ingredients with more positive health and environmental characteristics than conventional cleaners. EPA/DfE relies solely on Earthstone, its integrity and good faith, for information on the composition, ingredients, and attributes of this product. EPA/DfE has not independently identified, i.e., via chemical analysis, the ingredients in the product formula, nor evaluated any of Earthstone’s non-ingredient claims. EPA/DfE expresses its judgment and professional opinion only as to the environmental and human health characteristics of the product, based on currently available information and scientific understanding."

Earthstone International is a Green America approved business. Green America empowers individuals to make purchasing and investing choices that promote social justice and environmental sustainability. To be an approved business means that Earthstone meets Green America's criteria for social, economic, and environmental sustainability and corporate responsibility. Learn more on the Green America website (link is external).

Our Technology

Earthstone's products are made using our patented foamed glass technology. Foamed glass in an incredible technology that possesses a range of characteristics that make it useful for a multitude of household, industrial, and commercial uses. Some of the many opportunities for using foamed glass include:

  • Construction: insulation and green building materials
  • Horticulture: hydroponics, soil amendment, and green roofs
    (Visit (link is external) to learn more)
  • Household: cleaning and personal care products
  • Industrial: abrasives, aggregate, and filtration

The physical properties of Earthstone’s foamed glass include:

  • Recycled Composition: minimum of 95% of the weight is recycled glass, maximum 5% is additives.
  • Low Thermal Conductivity:  0.045 k - W/(m.K) at 25ï‚°C, similar to felt and cotton wool insulation
  • Lightweight and Low Density: 12 lbs per cubic foot
  • High Load Bearing Capacity and Compression Strength

Earthstone’s patented foamed glass product can be made to meet specifications for just about any use. Our specialized engineers are able to work with your company to determine the optimal variables to meet your project’s needs.

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KitchenStone® Cleaning Blocks

KitchenStone environmentally friendly cleaning blocks clean burnt food, rust, and stains from ovens, stoneware, ceramics, glassware, pots, pans, stove burners, and other cooking surfaces while contributing to a healthy environment. KitchenStone is made from recycled materials and saves the equivalent of 1 glass bottle from being added to landfills per stone.

  • Non-toxic, chemical free cleaning
  • Safe for your whole family
  • Works great on hot and cold surfaces
  • Won’t clog like sponges and scrubbers

Keep Your Kitchen Clean for Months!

This kitchen cleaner is the fastest way to scrub away stubborn baked-on food.

2 blocks per package. Each block is 2"L x 2"W x 2.25"H to fit your hands and inside your cookware.

Now with scouring pad tops!


Bath & Toilet Cleaning Blocks

  BathStone® Cleaning Blocks

BathStone environmentally friendly cleaning blocks provide powerful, effective, and safe cleaning for hard water, soap scum, rust, mineral build-up, mold, and mildew while contributing to a healthy environment. BathStone is made from recycled materials and saves the equivalent of 1 glass bottle from being added to landfills per stone.

  • Non-toxic, chemical free cleaning
  • Safe for your whole family
  • Works great on a variety of bathroom surfaces
  • Won’t hold bacteria or viruses like sponges & scrubbers

        ToiletStone® Cleaning Blocks

ToiletStone provides a powerful and safe cleaning tool for removing hard water stains, toilet rings, rust, and mineral build-up. With a built in handle, it is designed to clean hard to reach surfaces and effectively clean without the use of rubber gloves. ToiletStone is made from recycled materials and keeps the equivalent of 1 glass bottle from landfills per stone.

  • Removes lime and scale buildup without the toxic acids and the dangerous fumes found in chemical cleaners
  • Works great on porcelain and ceramic toilet bowls
  • Conforms to the shape of the surface being cleaned for more effective, faster cleaning

QuikSand® Sanding Blocks

QuickSand will help you complete your project easier and faster than ever. These environmentally friendly sanding blocks last 4 times longer than sandpaper and provide a fast, easy-grip sanding solution for all projects. QuickSand, for hand sanding, conforms to the shape of the sanding surface to provide you with a perfect, evenly sanded finish.

  • Non-toxic, chemical free stripping & sanding

  • Safe and easy to use

  • Save the equivalent of 1 glass bottle from landfills per stone


    Drywall Sanding Block   $6.00

Smooths and feathers drywall better than sandpaper or screens.

Block is 9" L x 3"W x 1.5"D

Painted Surfaces Abrasive Block   $4.50

Strips latex or oil based-paints & varnish from all wood surfaces.

Block is 4" L x 2"W x 3"H

   Rough Wood Abrasive Block    $4.50

Designed to sand and smooth rough wood

Great on any tough wood surface

Block is 4" L x 2"W x 3"H

   Rusted Metal Abrasive Block    $4.50

Strips paint, rust & scale from fencing, garden tools, outdoor furniture and more

Prepares metal surfaces for pre-painting

Block is 4" L x 2"W x 3"H


GrillStone® Cleaning Block

Cleaning your grill has never been so safe and easy! GrillStone® environmentally friendly grill cleaning blocks provide powerful, effective, and safe cleaning for BBQ grills, griddles, smokers, and other cooking surfaces while contributing to a healthy environment.

Safe on all barbeque grill grates including porcelain enamel, cast iron, stainless steel, and steel!

GrillStone is made from recycled materials and saves the equivalent of 1 glass bottle from being added to landfills per stone.

  • Non-toxic, chemical free cleaning
  • Works great on hot and cold surfaces
  • Conforms to shape of the surface to clean between grill grates
  • Won’t clog like grill brushes or pads

                 GrillStone® Single Cleaning Block    $5.00

Clean the toughest baked-on messes with ease! Safe for ALL grill grates including porcelain enamel, cast iron, stainless steel, steel, and chrome.

One block is 4"x 2" x 3"

     GrillStone® Cleaning Starter Kit    $7.00

Kit Includes:

  • One 4" x 2" x 3" GrillStone Cleaning Block
  • One 7" EZ-Grip Handle