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Sapphire

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**Sapphire**

What is Sapphire?

Sapphire is a single crystal form of alumina (Al2O3). It is known for its high hardness, scratch resistance, and optical properties. It is commonly used in applications such as watch crystals, smartphone screens (though less common now), high-pressure windows, semiconductor substrates (particularly for LEDs and power electronics), and precision optical components. Synthetic sapphire is widely manufactured due to its versatile properties.

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