Item:Gem of Many Facets
From DDO wiki
Gem of Many Facets
|Item Type||Jewelry / Trinket|
|Race Absolutely Required||None|
|Location||The Chronoscope, End optional chest|
|Description||This gem is cut very finely such that it has countless glittering faces. Equipping it will complete certain set bonuses even if you are only wearing one of the pieces.|
As per the item description, the Gem of Many Facets replaces the Necklace portion of the item set for purposes of getting the set bonus. The gem does not provide the bonuses specific to the necklace.