Limestone Tiles Wholesale : The muted tones of limestone are perfect for today's more casual and comfortable lifestyles. Generally these soft beiges and tans, either polished or honed, are appropriate for bathrooms, fireplaces, counters and less-traveled flooring where a more informal decor is desired. Limestones are sedimentary rocks that are formed at the bottom of lakes and seas, as silt and organic matter settle to the bottom. As more and more layers build up over thousands and millions of years, adding more and more weight, the heat and pressure cause chemical reactions to take place to harden the sediments into solid stone.