Bristol Blue Glass
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Bristol blue glass has been made in
Bristol Bristol () is a city, ceremonial county and unitary authority in England. Situated on the River Avon, it is bordered by the ceremonial counties of Gloucestershire to the north and Somerset to the south. Bristol is the most populous city in ...
,
England England is a country that is part of the United Kingdom. It shares land borders with Wales to its west and Scotland to its north. The Irish Sea lies northwest and the Celtic Sea to the southwest. It is separated from continental Europe b ...
, since the 18th century, with a break between the 1920s and 1980s.


History

During the late 18th century Richard Champion, a Bristol merchant and potter, making
Bristol porcelain Bristol porcelain covers porcelain made in Bristol, England by several companies in the 18th and 19th centuries. The plain term "Bristol porcelain" is most likely to refer to the factory moved from Plymouth in 1770, the second Bristol factory. Th ...
, was working with a chemist,
William Cookworthy William Cookworthy (12 April 170517 October 1780) was an English Quaker minister, a successful pharmacist and an innovator in several fields of technology. He was the first person in Britain to discover how to make hard-paste porcelain, like ...
. Cookworthy began a search for good quality
cobalt oxide Cobalt oxide is a family of chemical compounds consisting of cobalt and oxygen atoms. Compounds in the cobalt oxide family include: * Cobalt(II) oxide (cobaltous oxide), CoO *Cobalt(III) oxide Cobalt(III) oxide is the inorganic compound with the ...
to give the blue glaze decoration on the white porcelain and obtained exclusive import rights to all the cobalt oxide from the Royal Saxon Cobalt Works in
Saxony Saxony (german: Sachsen ; Upper Saxon: ''Saggsn''; hsb, Sakska), officially the Free State of Saxony (german: Freistaat Sachsen, links=no ; Upper Saxon: ''Freischdaad Saggsn''; hsb, Swobodny stat Sakska, links=no), is a landlocked state of ...
. It is uncertain when Bristol blue glass was first made but the quality and beauty of the glass swiftly gained popularity, with seventeen glass houses being set up in the city. Lazarus and Isaac Jacobs were the most famous makers of Bristol blue glass in the 1780s. Lazarus Jacobs was a Jewish immigrant to Bristol from Frankfurt am Main, Germany. In 1774, at the age of seventeen, Isaac joined his father's glass cutting firm at 108 Temple Street, Bristol, and launched Bristol Blue glass as a national brand, using the cobalt oxide Cookworthy imported. Isaac was responsible for the great growth of the company, and the expansion of its goods. Their company held a royal warrant and made glass for the aristocrats of Europe. Bristol’s glass makers were invited to demonstrate their skills at the
Great Exhibition of 1851 The Great Exhibition of the Works of Industry of All Nations, also known as the Great Exhibition or the Crystal Palace Exhibition (in reference to the temporary structure in which it was held), was an international exhibition which took pl ...
, opened by
Queen Victoria Victoria (Alexandrina Victoria; 24 May 1819 – 22 January 1901) was Queen of the United Kingdom of Great Britain and Ireland from 20 June 1837 until her death in 1901. Her reign of 63 years and 216 days was longer than that of any previo ...
and Prince Albert. At this period
cranberry glass Cranberry glass or Gold Ruby glass is a red glass made by adding gold salts or colloidal gold to molten glass. Tin, in the form of stannous chloride, is sometimes added in tiny amounts as a reducing agent. The glass is used primarily in exp ...
was made for the first time by adding 24 carat
gold Gold is a chemical element with the symbol Au (from la, aurum) and atomic number 79. This makes it one of the higher atomic number elements that occur naturally. It is a bright, slightly orange-yellow, dense, soft, malleable, and ductile me ...
to lead crystal, giving the glass its ruby red tones. Production ceased in about 1923.


Revival

Around 1970 Thomas Webb & Sons of Stourbridge made a range of about ten Britol blue glass shapes, but had to stop as they found cobalt dust was contaminating their lead crystal. At the request of John Stott, the M.D. of Thomas Webb, (who closed down in 1990), Nazeing Glass of Broxbourne, Herts, started to supply the Bristol Museum and Art Gallery Shop with a range of some twenty glass shapes, all based on 18th century inspired designs, from 1975 until 1990. Bristol-based glass makers James Adlington and Peter Sinclair held their Hot Glass exhibition in 1988 at Hand Made Glass, Bristol. This exhibition led to a revival of Bristol's hand blown glass industry and the creation of a Company that has spawned the careers of many other studio Glassmakers in the South west. Today, Bristol Blue Glass is produced by The Original Bristol Blue Glass Ltd in
Brislington Brislington is an area in the south east of the city of Bristol, England. It is on the edge of Bristol and from Bath. Brislington Brook runs through the area in the woodlands of Nightingale Valley and St Anne's Wood. Brislington formerly hou ...
, established in 1988. In the 1990s,
John Harvey & Sons John Harvey & Sons is a brand (trading name) of a wine and sherry blending and merchant business founded by William Perry in Bristol, England in 1796. The business within 60 years of John Harvey joining had blended the first dessert sherry, ...
of Bristol began to sell Bristol Cream sherry in bottles made from Bristol blue, having shaken off the notion for over 100 years of dangerous and often poisonous liquids being sold in blue bottles.


Production

Image:Bristol Blue Glass Heron Body.jpg, Bristol blue glass heron body Image:Bristol Blue Glass Heron Base.jpg, Bristol blue glass heron base Image:Bristol Blue Glass Heron.jpg, Bristol blue glass heron. Beak being pulled into place Image:bristol blue glass manufacture arp.jpg, A stage in the manufacture of a Bristol blue ship’s
decanter A decanter is a vessel that is used to hold the decantation of a liquid (such as wine) which may contain sediment. Decanters, which have a varied shape and design, have been traditionally made from glass or crystal. Their volume is usually equ ...


Chemical composition

The glass contains
cobalt oxide Cobalt oxide is a family of chemical compounds consisting of cobalt and oxygen atoms. Compounds in the cobalt oxide family include: * Cobalt(II) oxide (cobaltous oxide), CoO *Cobalt(III) oxide Cobalt(III) oxide is the inorganic compound with the ...
, which creates a deep yet bright
blue Blue is one of the three primary colours in the RYB colour model (traditional colour theory), as well as in the RGB (additive) colour model. It lies between violet and cyan on the spectrum of visible light. The eye perceives blue when ...
, and 24%
lead oxide Lead oxides are a group of inorganic compounds with formulas including lead (Pb) and oxygen (O). Common lead oxides include: * Lead(II) oxide, PbO, litharge (red), massicot (yellow) * Lead(II,IV) oxide Lead(II,IV) oxide, also called red lead o ...
(PbO).


See also

*
Cobalt glass Cobalt glass—known as "smalt" when ground as a pigment—is a deep blue coloured glass prepared by including a cobalt compound, typically cobalt oxide or cobalt carbonate, in a glass melt. Cobalt is a very intense colouring agent and very litt ...
*
Glassblowing Glassblowing is a glassforming technique that involves inflating molten glass into a bubble (or parison) with the aid of a blowpipe (or blow tube). A person who blows glass is called a ''glassblower'', ''glassmith'', or ''gaffer''. A '' lampworke ...


References


External links


Bristol Blue Glass

Video of glass blowing at Bristol Blue Glass
Cobalt Glass types Culture in Bristol {{DEFAULTSORT:Bristol Blue Glass