Hello, this is a Franklin Mint Gemstones of the World Sterling Silver Set. 63 pieces with storage case. Each piece comes with a pamphlet telling the history of the stone. Norway is missing the gemstone and South Africa has the diamond reglued on (please see picture). This was produced by the Franklin Mint as a subscription collection, meaning one new ingot would arrive each month.Due to the length of time needed to complete a full collection, very few sets were actually completed. Each ingot represents a country that is a major gem producer, and each ingot is inset with an actual gemstone.
The front of each ingot shows the gemstone and the country of origin. The back states the name of the gemstone, its specific gravity, its Mohs hardness and the.
The Mohs scale of mineral hardness is based on the ability of one natural sample of matter to scratch another mineral. The samples of matter used by Mohs are all different minerals. Minerals are pure substances found in nature. Rocks are made up of one or more minerals.As the hardest known naturally occurring substance when the scale was designed, diamonds are at the top of the scale. Each sterling silver ingot measures 1" x 1/2" and contains 2.9 grams of. The actual silver weight (ASW) of this set is 5.434 oz. It will be securely packaged.
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