About Gold and Gold jewellery

Gold is a dense, soft, shiny, ductile and rare metal. Gold is a noble metal. It is resistant to corrosion and oxidation in moist air (unlike most base metals that rusts).For thousands of years it has been used as an ornament of kings, a currency and standard for global currencies, in competitions as symbol of victory (gold medals) and more recently, in a wide range of electronic devices and medical applications. Which is why it is considered most valuable and beautiful metal.

Measurements

Fineness and purity:

Gold purity is measured in “carats”. ‘Carat’ is the measurement of purity of gold alloyed with other metals. 24 carat is pure gold which does not contain any other metals. This chart shows some examples of the composition of various carat of gold.

 CaratGold(Au) Silver (Ag)Copper (Cu)
Yellow Gold9k37.5%42.50%20%
Yellow Gold10k41.70%52%6.30%
Yellow Gold14k58.30%30%11.70%
Yellow Gold18k75%15%10%
Yellow Gold19K79.1%17%3.9%
Yellow Gold22k91.70%5%2%

Often you will see a piece of jewellery stamped 22k, 19k 18K, 14k, 10k and 9k which means it contains of gold in percentage. The most common type of gold jewellery is 14k and 18k gold. South Asians prefer 24K and 22k gold jewelleries however there is a growing trend towards 18k and 14k gold and diamonds jewelleries.

Gold weight System:

The weight of gold is measured in troy ounces

1 troy ounce = 31.1034768 grams

1 tola = 11.6638 grams

1kilo = 85.7353 tola

Colour

Gold is available in three colours: yellow, White and rose.

Yellow gold

Yellow gold looks nice on anyone. It looks fantastic for all kinds of wedding and engagement rings, and make a beautiful choice for modern and vintage-inspired styles. It is also a good choice for rings that may have to be resized later. Diamonds look brighter and whiter when placed adjacent to yellow gold due to its yellow hue.

White gold

White gold is a popular alternative to yellow gold, silver, or platinum. White gold contains varying amounts of gold (which is yellow) and one or more white metals to lighten its colour. The most common white metals that form the white gold alloy are nickel, palladium, platinum and manganese. Although most people think, white gold is a shiny white metal, which is actually from the rhodium metal plating that is applied to all white gold jewellery. Without the rhodium coating, White gold might be grey, dull brown or even pale pink.

18K white gold

75% gold

10% palladium

10% nickel

5% zinc

14K white gold

59% gold

25.5% copper

12.3% nickel

3.2% zinc

Rose gold

Rose gold, red gold, and pink gold are made from a gold and copper alloy. Adding copper, which has a bold pinkish-orange colour, gives the gold a beautiful pinkish gold colour. The varying percentage of copper used determines the colour of the gold. The more copper that is used, the stronger the rose colour. There is no such thing as pure rose gold, since rose gold is an alloy of gold and copper. Below are examples of the common alloys for 18K rose gold, 18K red gold, and 18K pink gold.

18K Red Gold18K Rose Gold18K Pink Gold
   75% gold   75% gold   75% gold
   25% copper   22.5% copper   20% copper
    2.75% silver   5% silver