I have gathered some beach rocks from my family home that is listed for sale. I would like to have them polished and engraved for family members as mementos. Do you offer that service? If not can you refer me??

No they do not polish rocks, i believe they only inscribe cut diamonds and gemstones, try the vista mineral society they may be able to help

I am not from the institute but I have visited there and I can tell you that more than likely this service would not be provided by them at all. What you need to do in your area is Google lapidary and find someone who does work with rough stones polishing them it's cetera and there you will eventually find what you are looking for.