I'm struggling to get time to do my designs.. but if someone wants to jump on this, i'm cool with it..
1.) Incorporate a diamond magnifying glass
2.) Couple diamond logos maybe one kind of cloudy [as a cubic syconium] and a crystal clear one [ or both crystal clear]
maybe even use lil cutty twice
3.) text reads "real recognize real"
another idea is you could some how incorporate the way real good diamonds cut glass.