When she gives you the Raiment:
Adara al-Rajin tells you, "High Queen Elysa asked me to create a special raiment for all Isparians who have made Dereth their home. The crest up on the raiment is that of Asheron's own family, the Realaidains. Wear this raiment with pride! But please take care of it - I only have the materials to provide one to each adventurer."
Adara al-Rajin gives you Realaidain Raiment.

And if you try to get a second one:
Adara al-Rajin tells you, "I remember you! I already gave you a Realaidain Raiment. Wear it with pride, my friend!"