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What is marcasite?

marcassite brute

Marcasite has the same chemical composition as pyrite: FeS2, the same hardness (6-61/2), the same appearance and the same deposits, iron ore mines. The only difference is their Crystal System: orthorhombic for marcasite and cubic for pyrite.

Mystic topaz

topaze brute

Much of the Topaz that is found in nature is colorless, or white. In order to add colour, the gem can be treated: it is then coated with an ultra-thin layer, which is similar to the coatings used on camera lenses.

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