Li Wei returned to the Mage Tower.
Troska had explained it to him before he left.
The Source Heart Necklace, inlaid with the Fire Spirit Pearl, was a piece of Tier Three, Perfect-grade Magic Equipment.
If crafted using Elemental Crystals, it could only produce Magic Equipment of Good or Excellent quality.
As for the equipment's level, that depended on the level of the Elemental Crystal used.
Magic Equipment was graded from Tier One to Tier Nine.
Equipment quality, from lowest to highest, was: Common, Average, Good, Excellent, Top Grade, Perfect.
Li Wei's Invisibility Cloak was Tier One, Good quality.
A pretty decent piece of equipment, all things considered.
As for the High Level Magic Equipment often mentioned among Mages, that referred to Magic Equipment of Tier Four and above.
There was a qualitative leap in power between Tier Three and Tier Four Magic Equipment.
