Refer to:!
New Feature: You can now use Jewel Crafting to turn 3 Small Flawed Rubies into Mystic Crystals using the Round Tower. Each time you craft 3 Small Flawed Rubies to create a Crystal Treasure Chest which will contain your Mystic Crystals!
Looks like it is now possible to finally do something useful with all the jewels in the workshop.
But it doesn't seem to work on our servers yet, or?
When will we be able to craft Mystic Crystal Chest from the Small Flawed Rubins?