Black Gold

Gold is originally of yellow colour but the gold is available in many different colours and they are mainly obtain by alloying the gold with some different metals. Black gold is also an alloy of pure gold. There can be many different methods through which black gold can be created. Among them some of the methods are described as below: The controlled oxidation of gold is processed which contains carat gold and the amorphous carbon with cobalt and/or chromium. The process is called chemical vapor deposition and it is assisted by Plasma. One another process to make black gold alloy includes the process of patination which is formed when we apply sulfur and oxygen containing compounds directly with carat gold.

 

Electroplating is the most common and usual process done in market jewelers workshops to make black gold. The process involves the use of black rhodium and ruthenium. Electroplating is done by taking two charged plates of opposite charges with a medium solution mainly as mentioned rhodium or ruthenium, hence the process coats the carbon with a black layer. Solution of ruthenium makes gold more black coated than the solution of rhodium.

 

Black gold is used in fancy jewelry and mostly light weighted chains, bracelets, rings and earrings are manufactured in jewelry industry. Although the demand of black gold jewelry is very rare and most of the people do not know about this metal, black gold is still used in fancy jewelry sets and sold in high rates. The jewelry using black gold and fancy gemstones like ruby, sapphire, topaz and emerald and even with high quality diamonds look glorious and elegant.

 

Recently a technique is invented which uses a laser technology to render deep black the gold. Many other advanced technologies are used by the manufacturers of jewelry to make and coat the black gold. Hence black gold increases variety in jewelry industry mainly.