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Clean quartz sand predominates, modified by soda ash to lower the melting point.

[For crystal glass, lead is added to improve the mass and alter the tone of the crystal. And as it is softer, it is easy to inscribe (cut) without breaking.]

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13y ago
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11y ago

how is the subastance glass extracted for use

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Q: How is the raw material for glass extracted and purified?
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