Reclaimed stone, such as granite or slate, and wood are the most sustainable and low-emission countertop material options. To install cabinets and countertops, use low volatile organic compound (VOC) or Greenguard Gold certified adhesives, or opt for mechanical fasteners instead. To finish off the look, use water-based, low-VOC sealants and finishes on cabinets and countertops. Onyx needs a sealant that is reapplied every few years.
Sandstone is a good option too, but make sure to use a non-toxic sealant. Soapstone is a great natural choice that is dense and doesn't require sealing. It's usually treated with mineral oil to maintain its color, but you can also use Milk Paint Soapstone Sealer, which is a natural nut oil with beeswax. This soapstone sealer will also work with onyx and sandstone, as long as the stones are polished and don't have a shiny finish.
Quartzite is usually very dense, denser than granite, and may not require a sealant. Home Depot quartzite has a StoneMark sealant, which is a thin film attached and has a very long warranty. I didn't notice any smell in the sample I obtained, but I have doubts about how the film will hold up. Limestone is relatively soft and porous compared to many of the other options.
It can be sealed with walnut sealer, although you should check that it is not yellowish. You may need to use a non-toxic synthetic sealant to maintain the true color. Lead-free ceramic tiles (made in the USA) top the list of healthiest materials for countertops, followed by solid surface products such as Corian, then artificial quartz and cultured marble. Plastic laminate and granite fall at the bottom of the classification.
By consulting with architectural experts and a professional interior designer, you can determine which kitchen countertops would work best for your space. Stone countertops must be manufactured locally by a professional who will model, manufacture and install your countertop. Recycled glass countertops offer an exceptional touch of color and vitality that cannot be found on any other countertop. And if you plan ahead, you can change the whole feel of your kitchen with the countertop of your choice.
I moved to an apartment with the countertops already placed in the bathroom (unventilated), living room and kitchen. Kitchen countertops are available on the market in different materials such as wood, quartz, stone, concrete, tiles etc.