“Quartz melted by lightning at Packington.”
1790-1819
Analogue quartz clock, with voice controlled alarm
1984
z-ring cut from a plane of quartz crystal
Chunk of quartz
1850-1920
Specimen of quartz
Carton and instruction manual, for quartz clock, with voice controlled alarm
1984
Two quartz slices for Senarmont's experiment
Right-polarized quartz in wood mount
Manufactured high grade quartz as used in spacecraft electronic components
2007
String firebag containing pipe
1850-1920