The Shamrock glasses are just for style and do not complete the set.

Quote Originally Posted by kryzteenah View Post
I've the same question. The ingot shield for example, if it's purchased and equipped with the Serpent helm and armor will break the 3 pc bonus, won't it @Cinco? Thank you for your answer.
This has been answered already.

Quote Originally Posted by Maosachic
cinco!!!! Will the mystic serpent set bonus work with the dragon egg the crusader shield and the ignot shield!!!??? THANKS )

Quote Originally Posted by Cinco View Post
Yes. It will work with any of those off-hand items! :-)