There are three sections to review:
In the area of Rare Clothing Drops - the link provided by Zep above covers everyone who obtains a 'free drop' from any NPC Enemy.
http://www.piratesonlineforums.com/f...ead.php?t=3627
In the areas of Jewelry (Quests) there are several threads currently in the Forum (having problems searching today from my work PC - but they are not hard to find).
In the area of Jewelry (Items) refer to the Items Quests posts also found in this general area (once again my search is not working well here today).