Stone Essentials. Made to Fit.
Stone thresholds, shower curbs, shelves and more—with custom sizing options.
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Best Sellers
Bianco Carrara Stone Shower Curb Top
Pure White Stone Niche Shelf
Dark Grey Matte Stone Saddle Threshold
Absolute Black Matte Granite Stone Niche Shelf
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Find a color and material to complete your project.
Customer Reviews
Perfect
Stumbled across this company while looking for more affordable option for our master bathroom renovation. The ordering process was very easy and had lots of options to choose from. Both pieces came…
Had them custom cut and was exactly what I needed. Fast shipping
Stone Thresholds, Shower Curbs and Custom Stone Products

Plato Surfaces offers stone thresholds, shower curbs and other finishing pieces in natural marble, granite and engineered quartz. Each piece comes finished, and most products can also be cut to your exact size. In addition, every product page shows the stone, finish, edge and size options, with the price for each size.
Marble thresholds for every doorway
Our marble thresholds cover the joint where two floors meet, for example at a bathroom door or between two rooms. First, choose an eased edge, a single Hollywood edge with one sloped side, or a double Hollywood edge with slopes on both sides. A sloped edge also makes the step between two floor heights smoother. Then pick a polished or matte finish to match your floor tile.
Quartz shower curbs, seats and shelves
Finish the shower with quartz shower curbs, shower seats and niche shelves in the same stone. In the same way, wall caps, window sills and vanity backsplashes complete the room, so every edge matches.
Custom stone products cut to size
Need a size that is not listed? In that case, use our Build Your tools for thresholds, shower curbs, niche shelves and shower seats. Simply choose your stone, finish and edge, then enter your final size. As a result, you see your price before you order.
Order a sample before you buy
Not sure which color to pick for your stone thresholds or shower curb? Every product page has an Order Sample button, so you can see the stone in your own room first. After that, order the finished piece in the size you need.
Serving NJ, NY, CT and PA
We serve homeowners, contractors, builders and designers in New Jersey, New York, Connecticut and Pennsylvania from our Saddle Brook, NJ location. For help choosing stone thresholds or any other piece, email sales@platosurfaces.com or call (201) 357-0444.
Need help with your project?
Contact us for sizing and product questions.
