Circular unit of Finsen lamp
1890-1900
Transverse folding
1801-1900
Stone, piece of quartz
1881-1910
Specimen of quartz
Barrel-shaped haematite weight
circa 1700-1600 BCE
Transparent quartz Syrian weight, barrel shaped, from Gaza, Deben system
circa 1700-1600 BCE
Barrel-shaped haematite weight
circa 1700-1600 BCE
Barrel-shaped haematite weight
circa 1700-1600 BCE
Barrel-shaped haematite weight
circa 1700-1600 BCE
Barrel-shaped haematite weight
circa 1700-1600 BCE
Quartz pebble
Veined water worn stone
1890-1930
Quartz Crystal used for Oscillator
2012
Small metal tinder box with steel incorporated round rim
1820-1900
Tumbler, quartz, cylindrical, flat base, Italian
John Dee's crystal, Europe, 1582
1582
Leaf-shaped snuff bottle with snuff spoon
1851-1900
Hollow Prism of natural quartz with mounting lug on base
1900-1905
Boys' Radiomicrometer, 1887-1900
1887-1900
Spectacles: metal frame, smoked quartz; hinged extensi
1770-1850
Circular quartz planar mirror (5-inch)
1960-1970
Quartz arrowhead in gold mount
1880-1920
Irregular stone weight
1880-1920
Concave iron block with crystal quartz attached
Multiplying spectacles, 1650
1650
Six small pieces of quartz rod
1887-1892
Quartz Fibres by Sir Charles Vernon Boys, 1887-1892
1887-1892
left-handed quartz prism by Adam Hilger Ltd.
1900-1905
Four quartz optical flats
1920-1939
Shrine of lingam in yoni
1801-1900
Quartz microscope specimen slide for ultra violet illumination
1910-1960
Length of Boys' Quartz Fibre in Display Case, 1887-1892
1887-1892
Lummer plate
1904-1948
Irregular stone weight, with central hole
1880-1920
Quartz stone
Boar's tusk amulet
1870-1920
Quartz, incorrectly thought to be a bezoar
Quartz, incorrectly thought to be a bezoar
Bow, transverse folding spectacles
1690-1720
Quartz pebble from well sacred to St. Kieran
Quartz pebble
Heurtley magnifier, 1919.
1919
Limestone Syrian weight, cone shaped, from Gaza, Deben system
circa 1500 BCE
Limestone Syrian weight, cone shaped, from Gaza, Deben system
circa 1500 BCE
White quartz Syrian weight, cone shaped, from Gaza, Deben system
circa 1500 BCE
Brown haematite Syrian weight, barrel shaped, from Gaza, Deben system
circa 1700-1600 BCE
Barrel-shaped haematite weight
circa 1700-1600 BCE
Quartz Crystal for X-ray polychromator, England, 1980
1978-1980
Mortar,bowl shape, polished yellow/brown quartz
1501-1900
Charles Vernon Boys' Original Gravitational Apparatus, 1889
1889