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Magnetic Stone
The mineral magnetite is iron oxide (Fe3O4), which is found in all three igneous, metamorphic and sedimentary rocks. This stone is often extracted from iron ore. Magnetite is also a mineral with the highest amount of iron (72.4%).
Lapis Lazuli
lapis lazuli, or lapis for short, is a deep-blue metamorphic stone used as a semi-precious stone that has been prized since antiquity for its intense color.