Here is an article about wearing specific colors & colored gemstones to assist when a person is lacking in something, ill, etc. Each color or stone represents a different ailment, etc. To my knowledge, this practice has been used for thousands of years, even in what is termed Ancient Times.
I work with crystals. I would urge you to research the work of Marcel Vogel, an IBM scientist that was able to measure energy levels in his crystal cut designs. I do know that IBM has been able to encode a picture of the Mona Lisa in a crystal. Basically, you can affect them with your mind, usually quartz. All crystals have a purpose and they are mainly to be given to people at this time, which is why they are so available now. Earth has a huge crystal network that is ancient and part of a computer of sorts that was recently repaired and activated. But that is for another day. Good crystal hunting. I would recommend any Arkansas quartz, Lemurian Seeds, Azestulite or even Herkimer Diamonds.