From Lost Fables Wiki
Pure jade is among the rarest of precious stones. While there are several stones which appear much like jade, and many more which can be dyed to look like jade, true jade is fantastically rare. Using it for any purpose is an extreme display of wealth, doubly so if it is merely a piece of jewelry.
Generally speaking, when a gem is used for enchantments, it is either embedded into the metal of the weapon while it cools, or crushed into a fine powder and incorporated into the metal itself as it is forged.
Jade, when it is not being used in exorbitantly expensive jewelry, is used by enchanters to make weapons and armor which increase the speed of their users. This property is extremely highly valued by almost anyone who goes into combat, making the gem doubly worthwhile.
Weaponry and Armor
A weapon which is enchanted with jade will usually strike faster, while a person wearing armor so enchanted almost always moves faster in general as a bonus from the enchantment.
There are no jade Artifacts on Anoma, perhaps you can change this.