Vitreous Stone Drake Obtainable on Normal Stonecore
So i was tanking Stonecore with my guild at 83 and when we got to the stone drake boss after downing him he dropped his mount i dont have a screen shot, but you can possibly look it up on obtained loot by Awsumcake Horde Tortheldrin. if u dont believe me thats fine, if u wanna check yourself he's usually online so u can pm him and he can link it for ya