Do you have any idea why the owner thinks it is a meteorite, and in particular a lunar meteorite?
Is it just a hunch and a wish, or has the owner done some preliminary background work and has solid reason to think so?
The owner might consider starting here in either case. There is a quick self-test check-list that could bolster or diminish the chances of it being a meteorite.
A quick Google search came up with this list of possible places to have meteorites tested. The rest of the web site is very informative as well, and it does contain a couple pieces of info possibly relevant to the owner.
"A meteorite testing institution reported that on average out of a thousand suspect meteorites submitted only one will pass verification."
and this
"Date: Thu, 27 Dec 2007 10:10:37 -0600 To: meteorite-list@meteoritecentral.com From: Randy Korotev
I have been fortunate to have seen, photographed, and chemically analyzed practically every lunar meteorite that has ever been found. I still can't identify a lunar meteorite "just by looking" at it, however, and I believe that no one else can, either.
I know that some terrestrial rocks from northwest Africa have been sold as lunar meteorites:
I myself bought an alleged lunar meteorite from an experienced and respected European dealer who must, I assume, have obtained it from a "local" dealer or finder [from Northwest Africa]. The sample turned out to be a howardite.
I'm willing to believe that the local dealers [from Northwest Africa]perhaps believed these various stones were lunar meteorites. Nevertheless, they clearly didn't do the obvious, as Greg suggests, and submit a type specimen for an expert to verify first. For what it's worth, I have never been sent a sample of a lunar meteorite by a northwest African dealer with a request to verify its authenticity.
Does anyone know how/where I can find out about having a meteorite tested for its origins ? The meteorite in question may be lunar which I believe is incredibly rare and the owner needs somewhere/someone that can be trusted to be honest about the outcome.
Strange question and way out of my normal comfort zone so I am trusting in all of your expertise to assist with this