Shards -> Mineral conversion needed !
Red Shard - Red Mineral
Light Shard - Yellow Mineral
Green Shard - Green Mineral
Blue Shard - Blue Mineral
Dark Shard - Purple Mineral
It will help solve the excess shard materials we are accumulating, and allow those who play more to have an ever-growing influence on the themes of gate.
As for the cost / conversion rate, that will ultimately be up to Three Rings, but I will suggest the following:
1 shard = 10 minerals, cost of conversion = 5 crowns (per shard)
That will, in effect, make each shard worth 35 crowns if you can find an x4 price. 25 crowns a shard if x3. So it won't always be worth doing, but it will at least be an option for clearing out excessive amounts of shards or even provide a money sink for the super-rich to influence themes (while bringing the price of shards back up for the poor)
P.S. To be clear, I am NOT suggesting minerals to shards, that would be stupid and make crafting too cheap.
Well, I can't see why not.