I'm so sorry and sad! I was following along and was so excited to see that Pecky was starting to eat and had hopes she was turning a corner - and then this! My heart goes out to you. We got our first Sapphire Gems about 10 weeks ago and are absolutely besotted with them (I am anyway and I suspect my DH is). We've had chickens for 13 years and none have ever captivated us like these little girls. They are such charming little characters. I am so sorry for your loss. 
