Size of Tumbled Stones in size M (medium) about 2 - 3cm.
Packaging unit 0.5 kg; per VE you get about 45 - 50 blue quartz.
Mineralogically, blue quartz is a quartz with inclusions of Dumortierite and is therefore also called Dumortierite quartz. Occasionally the misleading designation sapphire quartz can be found; a synonym for blue quartz is lazure quartz.
Lightness, calmness of mind, and learning by listening are the themes in which blue quartz is important in modern stone healing.