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lead crystal

noun

a type of glass containing a high proportion of lead within crystallized quartz, used esp. for decorative items

Examples

The composition of lead crystal is 54-65% silicon dioxide (SiO2), 18-38% lead oxide (PbO), 13-15% soda (Na2O) or potash (K2O), and other oxides and it has a high refractive index.

Word Origin

1902

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