Dumortierite Tumble

Polished Dumortierite tumbled stones with a mid-blue to denim-blue colour and a satin-to-gloss finish. This is the lighter, more granular variety of Dumortierite — the colour is a consistent medium blue with a slightly matte, fine-grained surface texture and visible mineral inclusions throughout. Sold per stone, approximately 2–3cm.

Dumortierite is an aluminium borosilicate mineral that typically occurs in a massive fibrous form. Its blue colour is caused by iron and titanium substitutions within the crystal structure. It is found in metamorphic rocks and is relatively uncommon as a tumbled stone, making it a distinctive addition to any collection. This lighter variety shows more of the stone's granular matrix compared to the darker, more glassy variety.

Stone Details

• Mineral: Dumortierite (aluminium borosilicate)
• Form: Tumbled, polished
• Size: Approximately 2–3cm per stone
• Colour: Mid-blue to denim-blue with granular surface texture
• Finish: Satin to gloss polished
• Sold: Per stone — colour depth and surface texture will vary

Colour saturation and surface texture will vary naturally between individual stones.