Cucumber Martini at Luxor's Aurora?

OK, I am kicking myself for not looking at the ingredient list again after tasting the Cucumber Martini at Luxor's Aurora bar. I don't even remember the exact name of the drink. It was very light and refreshing, but definitely a strong drink. I am pretty sure it had rock candy syrup in it, it was served in a martini glass garnished with only a cucumber slice, and it was perfectly clear. This sounds close, but is lacking the rock candy syrup:
http://www.lasvegasweekly.com/content...
It is possibly the same, but I am not convinced.

I don't even need proportions, but I would love to know what was in it. I have done Google searches and have found widely varying recipes for cucumber martinis.

Any ideas?