What is Black Gold
Firstly, black gold is not a naturally occurring metal. Just like how white and rose gold are given colours, similar processes are used to provide regular yellowish gold metal with an attractive black colour. There are different methods for creating black gold.
Electroplating: This is the most popular method. Under this process, the yellow gold metal is electroplated with a layer of either rhodium or ruthenium. This renders a black finish to the metal. Though it is the easiest method, the black colour also wears off quickly. The end product is both elegant and eye-catching.
Alloy: Alloying is the process of mixing two metals or more. In this case, gold is combined with a darker metal such as cobalt in the ratio 3:1 in that order. Here, a black layer covers the gold ore, and the black gold is not a mixture that results out of the combination.
Laser Treatment: This is a modern method used to make black gold. By altering the metal surface; when a high volume energy femtosecond laser is directed on it, the metal surface turns black. This process makes the most durable end product. This, however, also makes the product expensive.
Black enamel: This is yet another way of making black gold and is created by baking enamel onto the yellow metal’s surface. The resultant black gold is hard and endowed with a smooth and shiny covering.
Blackening: This is another method in which black-coloured liquid, painted on the surface of the gold layer. The top is polished, and the deep recesses are left untouched.
How to look after Black Gold jewellery
Use a non-abrasive gentle cleanser to keep Black Gold Jewellery immaculate. You can also clean with warm soapy water and use a gentle soft cloth to wipe it dry. Do not use a rough brush to clean black gold as it can abrade the surfaces and expose the yellow colour underneath. Always store black gold jewellery in a dry place in fabric-lined pouches or jewellery boxes.