Dumortierite is a lovely deep blue. It is one of the lesser known stones and, to me, it's gifts are often overlooked. It has a calming, stable, comforting, grounded energy and is my personal favourite to bring a good night’s sleep – both falling asleep and staying asleep.
It encourages self-belief, helping to bring confidence in trusting one’s own perceptions and viewpoints, and this in turn releases stress and confusion.

Please note:
The elastic will eventually perish if worn daily in the shower, and I’ve broken several by catching them on my kitchen doorknobs and snapping the elastic, so do take reasonable care.