Gold by Rajiv Mehta

This is such a great discussion of gold purity and explanation of karat weight, and how gold is tinted that I just had to share it with everybody.
Regards,
Beadbear
http://www.beadbear.com


Gold Colour
Gold, the most commonly used precious metal in jewelry has a distinct colour of its own, and is so popular, that the term ‘golden colour’ is used to refer to a blend of orange-yellow colour. But you will be surprise to know that there are much more rare and exotic, colors such as blue, purple,
red, and various shades of green and not just the orange-yellow shade called Yellow Gold. This is definitely the most popular of the gold shades. Yellow Gold is closely followed by White Gold and Rose Gold.

Gold Colour & Carat Relationship

18kt yellow gold is more yellow than 9kt yellow gold with 18kt yellow gold having a richer golden color making 18kt yellow gold a more popular choice of yellow gold than 9kt for ladies engagement rings.

9kt rose gold has a darker rose-copper color than 18kt rose gold which has a more subtle rose color.
9kt white gold and 18kt white gold have a similar white color (as normally both have a rhodium plating finish).

When trying to decide between the gold carat types there are three things to consider.
1. The metals performance with every day wear
2. The difference in color between the 9kt, 14kt and 18kt gold
3. The difference in price between the gold carats.
9kt, 14kt and 18kt are each suitable equally suitable for use in rings, earrings, pendants, bracelets and necklaces. Many people choose 9kt and 14kt for their earrings and pendants due to its lower price.

Tones

Jewelry can also be made using a combination of different gold colors. These jewelry items are sometimes called two-tone, three-tone or multi-colored gold..

Rhodium Plating

White gold rings are new they can be coated with another white metal called Rhodium. Rhodium is a metal very similar to platinum and rhodium shares many of the properties of platinum including its white color. The rhodium plating is used to make the white gold look more white. The natural color of white gold is actually a light grey color. The rhodium is very white and very hard, but it does wear away eventually. To keep a white gold ring looking its best it should be re-rhodium plated approximately each 12 to 18 months. Most local jewelers are able to rhodium plate jewelry for a cost effective pricet.

Purity

The gold content of yellow gold is measured in the same way it is measured in, for example white gold. So an 18kt white gold ring contains 75% pure gold, just as 18kt yellow gold contains 75% pure gold..

Rajiv Mehta
Surat Diamond Jewellery
http://www.suratdiamond.com/