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18 karat purplegold by Maarten van der Vegte

Necklace
 
Published: 16.01.2007
Necklace: 18 karat purplegold by Maarten van der Vegte.24 karat gold, pure aluminium, 18 karat purplegold, coated steel wire. 2002.Length: 45 cm.From Elements Series . This necklace is the result of the frequent questions I have been asked on . my purple gold and blue gold alloys. Every time I had to explain what . an alloy was and why we make alloys. So I thought it would be much . easier to explain this with an example. . The result is this necklace that contains 24 balls, which refers to the 24 karat gold. . 18 balls are pure gold, and 6 are, in this case, made of aluminium. . Each ball weighs 1 gram, and because there are two kinds of metals, . there are also two volumes, because they each have a different specific gravity. . When mixed (alloyed), you’ll get a purple metal as the result. . In the middle of the necklace there is a 25th ball as the result: . the 18 karat purple gold. So what you’re wearing is an . 18 karat purple gold necklace, it’s just not alloyed yet. .

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