​Blue is the color of infinity, it is directly associated with spirituality. All stones of this color are very soothing and refreshing. They develop in us the strength and inner balance. These stones are particularly suitable for people who are stressed or living in conflict. There are two variants of blue stone: sky blue colored stones and indigo blue colored stones. Sky blues are beneficial to the introverted, the shy and the emotional, as they support openness to others and communication. And dark blues are related to perception, intuition and spirituality.