Gold Jewellery

Gold Jewellery

Because of the softness of pure (24k) gold, it is usually alloyed with base metals for use in jewelry, altering its hardness and ductility, melting point, color and other properties. Alloys with lower caratage, typically 22k, 18k, 14k or 10k, contain higher percentages of copper, or other base metals or silver or palladium in the alloy. Copper is the most commonly used base metal, yielding a redder color.[15]

Eighteen-carat gold containing 25% copper is found in antique and Russian jewelry and has a distinct, though not dominant, copper cast, creating rose gold. Fourteen-carat gold-copper alloy is nearly identical in color to certain bronze alloys, and both may be used to produce police and other badges. Blue gold can be made by alloying with iron and purple gold can be made by alloying with aluminium, although rarely done except in specialized jewelry. Blue gold is more brittle and therefore more difficult to work with when making jewelry.[15]

Fourteen and eighteen carat gold alloys with silver alone appear greenish-yellow and are referred to as green gold. White gold alloys can be made with palladium or nickel. White 18-carat gold containing 17.3% nickel, 5.5% zinc and 2.2% copper is silvery in appearance. Nickel is toxic, however, and its release from nickel white gold is controlled by legislation in Europe.[15]

Alternative white gold alloys are available based on palladium, silver and other white metals,[15] but the palladium alloys are more expensive than those using nickel. High-carat white gold alloys are far more resistant to corrosion than are either pure silver or sterling silver. The Japanese craft of Mokume-gane exploits the color contrasts between laminated colored gold alloys to produce decorative wood-grain effects.

 

Street Shoot Women Opening Finger Rings Adjustable Imitation Pearls Jewelry

Street Shoot Women Opening Finger Rings Adjustable Imitation Pearls Jewelry
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Street Shoot Women Opening Finger Rings Adjustable Imitation Pearls Jewelry
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Indian Imitation Jewellery/ Party /Bridal/ Matt Gold Red Green Set

Indian Imitation Jewellery/ Party /Bridal/ Matt Gold Red Green Set
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Indian Imitation Jewellery/ Party /Bridal/ Matt Gold Red Green Set
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Belly Bar surgical steel navel button womens body piercing jewellery UK SELLER

Belly Bar surgical steel navel button womens body piercing jewellery UK SELLER
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Belly Bar surgical steel navel button womens body piercing jewellery UK SELLER
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Golden Oxidized Women Earring Jhumka Jhumki Drop Jewelry PushBack Classy Gift 6

Golden Oxidized Women Earring Jhumka Jhumki Drop Jewelry PushBack Classy Gift 6
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Golden Oxidized Women Earring Jhumka Jhumki Drop Jewelry PushBack Classy Gift 6
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