Is there a catalogue that shows all the existing natural stones?
There are thousands of varieties of different types of stones, and new varieties are constantly appearing in the market as a result of extraction in new areas in different countries. The catalogs and the web pages of the different countries, or associations, individual companies, etc. show the stones that are extracted, or processed and marketed by them, and therefore, by definition, are only a partial database. It is also a good idea to check on whether the stone of your choice is still being extracted. Being a unique and irreplaceable product of nature, perhaps the deposits of the stone in question no longer exist.