A+ Grade. Citrine is known as a stone for mental powers. It increases psychic abilities, protects from negative energies, helps with endocrine and digestive problems and helps create a state of joy. It’s also known as the “Merchant’s Stone” for its ability to generate money for a business. Keep one in your cash register and see your profits grow! Wear it on your person for best results and cleanse daily in cold running water for at least 60 seconds.