tumbled marble Silicon

[Gazzer]

Or go here OTTOSEAL SEALANTS

 

[Gazzer]

Another one here Silirub MA. For Natural Stone Joints

 

[Topshop]

Be careful using Silicon on marbles. Some marble will be darkened permanently by the oils in Silicon. Always test a sample before using Silicon with any natural stone. I usually try to use an acrylic with marble just to be safe.