£0.40 ex VAT
Dumortierite tumblestones, dark blue to mid blue in colour which have been tumbled and polished giving them a smooth feel and vibrant appearance, ideal as gift items, they pieces vary in size between 10 to 30 mm.
Dumortierite is a aluminium boro-silicate mineral, it can be fairly rare as it is often found among contact metamorphic rocks, it is sometimes referred to as blue quartz or gold stone. The mineral its self forms with a fiberous habit,however it can in some instances take an extremely high polished to it, and appears dark blue. These particular tumblestones are dark to mid blue in colour, they have been tumbled and polished giving them a smooth feel and bright colouration, they are available as single pieces or in set quantities.