One of a group of samples of rare and other metals in a pure state - platinum

Ediswan Sunlight incandescent electric lamp with single horseshoe filament, by Edison and Swan Electric Light Company, 1890s

Sample of platinum, eqilateral triangle sheet

Laboratory crucible of platinum

Ten inch double frame or pillar frame sextant of brass with platinum scale, in a fitted case, by Edward Troughton, Fleet Street, London, c. 1820

Brooch of 18ct gold, partially oxidised, with platinum fusion-inlay: English, London, by Jacqueline Mina, 1991

One of a pair of platinum earrings, spotted with gold and engraved on both sides: Scottish, Banchory, designed and engraved by Malcolm Appleby, made by Andrew Metcalfe, 1993

One of a pair of platinum earrings, spotted with gold and engraved on both sides: Scottish, Banchory, designed and engraved by Malcolm Appleby, made by Andrew Metcalfe, 1993

Platinum impression of obverse of Nicholas I medal - from Russia

Platinum brooch: Scottish, Edinburgh, Edinburgh College of Art, by Katy Hackney, 1989

Brooch made of felted platinum wire, 24ct gold granules and 18ct gold findings: English, London, by Jacqueline Mina, 1996

Ring, forged 18ct gold, textured platinum top part loosely linked to the shank, with diamond: British, by Jacqueline Mina, 2000

Ring, forged 18ct gold, with platinum tesserae fusion-inlay, top part loosely linked to the shank: British, by Jacqueline Mina, 2000

Slab-formed vase of porcelain of triangular section, with silver, gold and platinum globules on a dark blue glaze, with sculpted top, from the Ginga (Galaxy) series: Japan, Kyoto, by Kondo Takahiro, 2001

Sculpture entitled Mist, 2007, a monolith of porcelain with central glass element, covered in mist glaze, silver, gold and platinum on white slip incorporating touches of pink and green: Japan, by Kondo Takahiro, Kyoto, 2007

Platinum 3 rubles of Nicholas I, Russia, minted in St Petersburg, 1828, from Russia