Hi Graeme, We can supply you with a kit for cleaning and maintaining polished marble and granite headstones, the kit contains 1 x 750ml ready to use Beyond-Kleen all-in-one clean,shine,and protect, ideal product for granite and marble counter tops,headstones,etc, 2 x high quality granite/marble microfiber cleaning/polishing cloths, 2 x microcleaning hand pads for deep cleaning granite and marble surfaces, the kit comes with full instructions for deep cleaning, and maintaining, polished marble and granite surfaces. We don't even have to advertise this kit, its so easy to use with such incredible results that the orders just keep coming in from our clients referrals to their friends and family. If its of interest let me know and I will send you over a sample kit, you might post your findings back up here for the benefits of others.