The managing director of S.A.B. Mining in Guyana, Barry Kevin O’Rourke manages a sizable mining operation. Focused on mining for diamonds and precious metals such as gold on land allocated by the government, Barry Kevin O’Rourke also oversees commodity acquisitions and sales transactions for the company.

For many centuries, gold has been venerated for its beauty, radiance, and strength. Some cultures have even associated gold with a sun deity. Gold jewelry is produced in three main varieties: yellow gold, white gold, and rose gold. While yellow is the natural color of gold, other colors can be achieved by mixing other metals with pure gold to make what is called an alloy. Creating alloys, a process known as alloying, can not only change the color of gold, but also gives it added strength and durability.

White gold is made by mixing pure gold with white metals like palladium or silver. To give the jewelry more shine, white gold is often plated with rhodium. Rose gold is made by including copper in the alloy mix to give it a soft pink color. Other colors, such as black, blue, or purple, can be achieved by mixing gold with patinas or oxides on the alloy surface.