Protective is a trait added in Update 18 which can only be found on jewelry. Jewelry with this trait does not drop normally, but may be obtained by completing the Summerset Main Quest (for the ring) and the Psijic Order quest line (for the necklace), or by acquiring them from another player. Once learned, items with this trait may be crafted using Titanium, which may be found by harvesting Jewelry Crafting seams. Items with the Protective trait will increase your Spell Resistance and Physical Resistance by an amount dependent on the level and quality of the item.