UPDATE:
The Diamond has been traded.
I do still have 2 Emeralds, and might trade them for a Ruby, plus something - depends on the "something". IM me in world if interested.
(3 Emeralds = 2 Rubies, so 2 Emeralds = 1 1/3 Rubies)
If you would prefer to buy them directly, the Emeralds are set for sale in my "Secret Store" at:
http://maps.secondlife.com/secondlife/Dura/77/241/34
(Yes, it's in a cave. It's also where you'll find L$50 boxes when I have them, as well as other odds & ends. :-) )