The drilled blue quartz is about 3cm in size; the hole is about 2.2mm in diameter.
Blue quartz conveys lightness and calmness, when otherwise hectic and stress prevail. Learning through attentive listening and empathy are supported.
Mineralogically, blue quartz is a quartz with inclusions of Dumortierite and is therefore also called Dumortierite quartz. Occasionally, the misleading term sapphire quartz is also found; a synonym for blue quartz is glaze quartz.