Resources for Rock Identification:
The University of Michigan receives a large number of requests for sample identification, and we are no longer able to provide individual consultations over the phone or email.
The following links may be useful for identifying minerals, rocks, and meteorites at home. Keep in mind, out of the many hundreds of samples brought to us, the vast majority are common rocks or industrial slag. Only one sample has ever been confirmed as a meteorite at the University in the past several decades.
The University of Michigan Natural History museum occasionally runs a rock identification day. Check here for the latest news about upcoming rock-ID events at the museum: https://lsa.umich.edu/earth/community-engagement/community-collaboration-/id-day-at-the-museum-of-natural-history.html
Appraisal is a highly technical specialty outside the mission of the Department of Earth and Environmental Sciences. We are unable to provide appraisals, nor recommend or endorse appraisers.