Explanatory notes
… for convenience of transport (+). 7104.10 - Piezo-electric quartz - Other, unworked or simply sawn or … (e.g., ruby, sapphire, emerald, diamond, piezo-electric quartz); or - because of their colour, brilliance, … Explanatory Notes. Subheading 7104.10 Piezo-electric quartz has the property, when subjected to mechanical …