I tried doing a Tin Eye search for it, and came up with nothing. I hope you can find it! I know it sucks when you're looking for a very certain something, and you just can't find it ANYWHERE.
I had the hardest time a few years back trying to find a silver unicorn necklace charm in a VERY certain pose and mold. I had it when I was a little girl and LOVED this little silver unicorn charm Sadly, during a trip to Mexico with my family, I lost the charm and was completely heart broken.
I had been looking on and off through out the years for another one, and almost gave up until one time, about 5 or 6 years ago, I decided to try my search for silver unicorn charms on eBay again... and about 6 pages in, I FINALLY found it! But it was listed as a finger nail charm, and came with nail gems and decals. Bought that sucker in a heart beat, tossed the cruddy gems and nail decals, changed out the rinky dink jump ring that came with it, and replaced it with one of the sturdier tough as heck and thick jump rings I use for the keychain and phone charms I make. I wear it ALL of the time on a not-so-delicate chain around my neck. I took it off one time, and felt naked! I think I'd be heartbroken if I ever lost this little silver unicorn. ;~; To be honest, I'd rather give up ALL of my pony collection before EVER giving up this little silver unicorn charm. It just means THAT much to me to have this replica of my childhood unicorn charm on me at all times.