The incredible sapphire is a fine example of blue's wisdom, love, thought and serenity. Purple is a very spiritual color. Much like green, purple is great for healing and peacefulness. Purple maintains health and is especially good for headaches, mental illness, confusion, concussion and even hair problems. This color relieves depression and helps achieve restful sleep when worn at night.
Amethyst is definitely one of the all-time most popular crystals.
White is the color of the moon and is a very protective source. White stones are said to contain the powers of all colors and can be worn to achieve just about any desired result with visualization. White is good for lactation, luck, headaches and protection. White stones can include moonstone, but also the clear stones such as clear quartz or diamonds. Black represents the earth and stability.