Quite simply, yes. Lol I've been trying for diamond since 2012 when there were about 20 dragons so chances were WAY higher. I also noticed on your island you have a night (black) dragon in the breeding den with no habitat. How d'you do that? I don't think you're just lucky....I think you're magic
Anyway on to the help...
You should go to the market and buy the diamond fields habitat ( the one with the light blue heart sign under it) for 100,000 coins. If you don't have enough coins, you can buy some more considering you just bought 1400 gems.
If I were you, I would try to hatch that dragon as fast as possible so I could just stare at it, and finally feel like a successful human being!
Btw...I posted on your wall, I'm Dragon Forest