What does velious actually add?

[magnetaress]

At the end of the previous quest, Betti Frostweaver told you to show your Embroidered Coldain Prayer Shawl to Gilthan Brittleblade.

Gilthan Brittleblade says 'So, you've been chosen to attempt the rune, eh? Been ages since anyone's even made an attempt. The rune represents the very essence of our people, our culture, and our religion. Take a sea shell runed with enduring breath and a small brick of velium and grind them together in a mortar and pestle. Add water to the powder and model the rune. Fire the rune with water and the best of firing sheets. Show the product to Trademaster Kroven.'

So Coldain dwarfs like sea shells fire and water? And are good at pottery?

Like seriously, why? what does this supposed rune represent Coldian solidarity with uhmm...? Seashells? or something.