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Malachite Slabs from Republic of Congo
These Malachite slabs come from the Republic of Congo. This green stone is a well known material, and a most-popular copper secondary for lapidaries and jewelers alike. They will polish well with tin oxide, Zam (green rouge) and diamond. Mohs hardness is 3.5 to 4.
Learn more about marvelous malachite, including lapidary tips, in our blog.