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Teardrop-shaped bodies with large crystals, often referred to as "pegmatites," form when magma cools slowly, allowing large crystals, such as gemstones, to develop. These formations typically occur in the final stages of magma crystallization, where the temperature and pressure conditions create an environment conducive to the growth of sizable mineral crystals. Pegmatites are commonly found in granitic environments and can contain rare minerals and gemstones due to the concentration of elements during crystallization.

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