A variety of quartz, the colour ranging from yellow to golden brown to burnt amber. It was named in 1748. Citrine is said to be one of those stones used in the breastplate of the ancient high priest. It is thought to stimulate both mental focus and endurance. It can help dispel fundamental levels of fear, brightening even the darkest corners of ones perceived reality and helping one to laugh without restraintù. It is very useful in assisting to penetrate problems and expedite solutions. It can also be helpful in the treatment of digestive and blood circulation.