What Is Silica-Free Quartz? Zero-Silica Countertops Explained
What silica-free quartz is, why Australia banned engineered stone, how the US and EU regulate silica dust, and how to verify that a slab is truly silica-free.
What is silica-free quartz?
Silica-free quartz, also sold as zero-silica quartz or crystalline-silica-free surfacing, is an engineered stone slab with less than 1% crystalline silica by weight. Some products are declared at 0%. The 1% line comes from the definition in Australia’s engineered stone ban, which has become the reference point for the industry.
Traditional engineered stone is made mostly of ground quartz, often more than 90% by weight. Quartz is crystalline silica, and cutting, grinding or polishing the slab releases it as fine, respirable dust. Silica-free formulations replace the quartz with other minerals and recycled glass, bound with resin. Pressing, curing and polishing are similar, so the finished slab looks and works much like quartz: non-porous, stain-resistant, and available in marble-look and solid colors.
Why the industry moved: silicosis and Australia’s ban
Silicosis is an incurable lung disease caused by breathing in respirable crystalline silica. In Australia, health screening of workers who cut and install engineered stone benchtops found silicosis at high rates, including among young workers. Regulators responded with an outright ban.
| Date | What changed |
|---|---|
| 13 December 2023 | Work health and safety ministers agree to prohibit engineered stone. |
| 1 July 2024 | The ban on the manufacture, supply, processing and installation of engineered stone benchtops, panels and slabs takes effect in most states and territories. |
| 1 September 2024 | Stronger controls apply to processing any material with 1% or more crystalline silica, including natural stone. |
| 1 January 2025 | Import of engineered stone benchtops, panels and slabs is banned. |
The ban defines engineered stone as an artificial product with 1% or more crystalline silica by weight. A slab below that line falls outside the definition, which is why silica-free quartz can still be supplied to Australia. Importers should hold test documents that show the crystalline silica content of each product.
The United States and the EU
Traditional quartz remains legal in the United States. Fabrication shops that cut it must keep workers’ exposure to respirable crystalline silica within the limits of OSHA’s silica standard, using controls such as wet cutting and dust extraction. Silicosis lawsuits brought by fabrication workers, notably in California, have also made many shops wary of high-silica materials.
In the EU, work that generates respirable crystalline silica dust has been covered by the directive on carcinogens and mutagens at work since 2018, with a binding exposure limit, and several member states apply stricter national limits. Across these markets the direction is the same: less crystalline silica in the fabrication shop. For a distributor serving several regions, silica-free stock meets the strictest rule today and lowers the risk elsewhere.
Silica-free, low-silica and traditional quartz compared
| Feature | Traditional quartz | Low-silica quartz | Silica-free quartz |
|---|---|---|---|
| Crystalline silica | Often over 90% | Reduced, but 1% or more | Below 1%; some declared 0% |
| Filler | Ground quartz | Quartz partly replaced | Other minerals, recycled glass |
| Australia | Prohibited | Prohibited | Outside the ban’s definition |
| US fabrication shops | Legal; silica dust controls required | Legal; silica dust controls required | Little or no crystalline silica exposure; normal dust controls still apply |
| Colors | Widest range | Wide range | Smaller range, growing |
| Ask the supplier for | Safety data sheet | Test report showing the silica content | Laboratory test report for each product |
The trade-off is range. Silica-free lines are newer, so they offer fewer colors than the deepest traditional quartz catalogs, though the gap is closing.
Is a quartz countertop safe at home?
Yes. Silicosis is an occupational disease. It affects workers who cut, grind and polish stone, not the people who use an installed countertop. A finished countertop does not release crystalline silica dust in normal use, and Australia’s ban does not require installed engineered stone to be removed.
Choosing silica-free quartz is about the people who fabricate the slab, about compliance in markets such as Australia, and increasingly about project specifications. It is not a response to a hazard in the finished kitchen.
How to verify that a slab is silica-free
“Zero silica” on a brochure is not proof. Before you order, ask the manufacturer for the following.
Ask the manufacturer for
- A laboratory test report on crystalline silica content by weight, for each product rather than for a whole range
- What replaces the quartz, such as mineral blends or recycled glass, and whether the product is declared below 1% or at 0%
- Fabrication guidance on tooling and dust control: silica-free slabs still need normal shop safety
- Documents for your market, such as test results showing the product falls outside Australia’s engineered stone definition
A manufacturer should answer all four in writing. Vague answers at this stage are a warning sign.
Silica-free quartz from LIVEN
LIVEN supplies a selection of its quartz colors as silica-free quartz, from Calacatta whites and warm creams with gold veins to breccia and sage green designs. Test reports are available on request, and samples can be arranged before you order. See the current colors on the silica-free quartz page.
LIVEN has exhibited at Coverings, the North American tile and stone show, every year since 2024. At Coverings 2026 in Las Vegas, the booth fascia listed Zero Silica among its product lines. See LIVEN at Coverings 2024–2026.
Frequently asked questions
Is silica-free quartz the same as porcelain? No. Porcelain is a fired ceramic slab, usually thinner, and is cut with different tools and methods. Silica-free quartz is a resin-bound mineral slab, made in countertop thicknesses such as 2 cm and 3 cm, and is fabricated much like quartz.
Is quartz countertop dust a risk in my kitchen? No. An installed countertop does not release respirable crystalline silica in normal use. The documented risk is to workers who cut or grind the stone.
Can I still buy traditional quartz in the United States? Yes. Traditional engineered stone remains legal in the US, provided fabrication shops meet OSHA’s silica standard. Concern over liability is leading more shops to choose low- and zero-silica materials.
What counts as silica-free? Below 1% crystalline silica by weight, the line set by Australia’s engineered stone definition. Some products are declared at 0%. Check the test report for each product.
Does silica-free quartz cost more? Often somewhat more than traditional quartz, as the formulations are newer and volumes are smaller. Prices vary by color, so ask for a quotation on the colors you need.
Supplying Australia or another market that needs silica-free quartz? Ask LIVEN for test reports, samples or a quotation.
