Travertine is a polycrystalline rock of low hardness, formed during the precipitation of calcium carbonate from the waters of cold and hot carbonic sources, and is a sinter accumulation of calcite and aragonite Ca (CO3). Travertine is characterized by a porous porous structure of gray, yellowish, brown, grayish color. Density 1400-1800kg/m3 Can form porous varieties of stalactites and stalagmites.
You can see travertine stone for sale and buy it in the Minerals of Russia online store.