Daenerys last dress shoulders: ember or dragon scale?

[Psygnosis]

Hi all,
I'd like to realize this replica dress from GoT S06:
http://i65.tinypic.com/63t1fq.jpg
http://i68.tinypic.com/vo3hn8.jpg
making the dress itself is pretty easy, but that shoulders are driving me mad.
Are that dragon scale? or some kind of ember?!
if you look close you could see sort of hive that make me think that is a sort of burned-thing. It can make sense if you think that Daenerys survived the flames.

 

[Psygnosis]

no one?

 

[tdotholmes]

Looks to me at least on the left shoulder that it is supposed to be Drogon made using intricate lace patterns