Home Education From the Gem & Mineral Vault EducationGems & MineralsMuseum CollectionsOriginal Content for the Roskin Report From the Gem & Mineral Vault December 8, 2022 FacebookWhatsAppLinkedin Rhodochrosite from Peru on view at the Harvard Mineralogical & Geological Museum (MGM), Cambridge, Massachusetts, across the Charles River from Boston. Photo by Gary Roskin Related POPULAR CATEGORYTrade News956Featured News907Education328Colored Gems324Trends278DIamonds238Gems & Minerals206