Key Points Black gold : Petroleum and its derivatives are called Black Gold as they are very valuable. It is a term applied to oil or petroleum, which is black when it comes out of the ground and is worth a great deal of money. The word petroleum is derived from Latin words –Petra meaning rock, oleum meaning oil. So, petroleum means rock oil. Learn what is black gold and explore its uses and composition. Discover the allure of black gold jewellery with this comprehensive guide. Explore now! Black gold is yellow gold that has been altered to change its color, either by alloying, electroplating, or laser treatment. Learn about the value, durability, and style of black gold jewelry, and how to tell if it is real gold . Learn what black gold is, how it is made, and why it is popular for jewelry. Compare black gold with other black metals and find out how to care for it.
