Gold Colors

To make jewelry more suitable for everyday wear, pure gold is almost always alloyed with other metals principally copper and silver. By altering the proportions of these additive ingredients , several colors can be made.


White gold is attained by adding nickel or, for a hypoallergenic alternative , palladium to pure gold. The hue can range from a sand white to a silver gray.


The warm, pink – red shade of rose gold is achieved by varying the ratio of copper and silver in the gold alloy.


This timeless regal, metallic yellow color is commonly created by alloying gold with silver and copper. In most circumstances, coloured stones look best when set in yellow gold.


A nice contrast in two tone jewelry, the green tint in this gold alloy comes from increasing the silver content.

What is Karat?

When speaking about gold , both karat and carat refer to the purity of the gold. This is not to be confused with carat weight which is a unit of measure of a gemstone ‘s mass.

What does it mean when people speak of 14 karat , 18 karat , 19 karat, and 24 karat gold? What’s the difference between these designations and 585 gold , 750 gold or 9 50 platinum for that matter? They are just different ways of expressing the purity of gold or precious metal content in jewelry.

How Is Gold Karat Calculated?

24k is the numeric designation for pure gold. The most common gold alloys used in North American jewelry are 18K and 14K. The caratage or purity of gold is calculated as follows:

24 karat (pure gold)     24k / 24k = 1.000     1.000 x 100 = 100 % pure
19 karat (792 gold)       19k / 24k = 0.791     0.791 x 100 = 79.1 % pure
18 karat (750 gold)       18k / 24k = 0.750     0.750 x 100 = 75.0 % pure
14 karat (585 gold)       14k / 24k = 0.583     0.583 x 100 = 58.3 % pure

Gold purity and color

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