Shackleton's Antarctic Desk Set with Rare Minerals

• Sterling Silver - Sterling silver is a mixture of 92.5% pure silver and 7.5% of another metal, usually copper. Fine silver is 99.9% pure silver, and is relatively soft and the addition of the very small amount of copper gives the metal enough strength and hardness to be worked into jewellery, decorative and household objects.
• Important - Important is a word used in the antique trade to indicate an object should be ranked above other similar objects, and is therefore more valuable.
  
  The object could be considered important because it is by a famous designer or maker, has been shown at a major exhibition, is of exquisite workmanship, is rare or is a "one-off", was made for an important patron, and so on.
  
  Even further up the pecking order are objects that are described in catalogue descriptions as highly important or extraordinarily important.
• Circa - A Latin term meaning 'about', often used in the antique trade to give an approximate date for the piece, usually considered to be five years on either side of the circa year. Thus, circa 1900 means the piece was made about 1900, probably between 1895 and 1905. The expression is sometimes abbreviated to c.1900.
• Hunt & Roskell - Hunt & Roskell, were a firm of manufacturing and retail jewellers and silversmiths, founded in 1843 by Robert Roskell a famous pocket watch maker from Liverpool, and John Samuel Hunt who had previously been in partnership with silversmith Paul Storr, trading Storr & Co. (1819-22), Storr & Mortimer (1822-38), Mortimer & Hunt (1838-43) and then Hunt & Roskell (1843-97).
  
  Hunt & Roskell had retail premises at 156 New Bond Street and a manufacturing workshops at 26 Harrison Street, near Clerkenwell.
  
  They were among the finest of the Victorian silversmith, manufacturing in the high Victorian style, and their craftsmanship was recognised by their appointment as silversmiths and jewellers to Queen Victoria.
  
  John Samuel Hunt continued as a partner until his death in 1865, when he was succeeded by his son, John Hunt (d.1879). Robert Roskell remained in the firm until his death in 1888. In 1889 the firm was taken over by J.W. Benson and continued in business as Hunt & Roskell Ltd until c.1965.
• Basalt - Basalt is a hard, dense volcanic rock formed from the rapid cooling of basaltic lava, and makes up most of the earth's oceanic crust.
  
  However it is also the name given by Josiah Wedgwood in 1768 to a fine black unglazed porcelain which he called Wedgwood Black Basalt.
  
  Using this fine-grained stoneware he was able to produce copies of the newly excavated Etruscan pottery from Italy, with a lustrous and smooth, surface, and this new innovation proved to be a huge commercial success.

This item has been included into following indexes:

• desk sets - various materials 153
• ink stands - silver items 129