This is a PSA to everyone because a lot of people seem to say things like this. I’m not trying to be disrespectful, but to help. This isn’t how odds or probability works. When it says 1:50, that doesn’t mean in 50 packs you’re guaranteed a diamond. It means each individual pack you have a 1:50 shot. Let’s say you have a bundle of 50 packs. On pack one, you have a 1:50 chance at a diamond. Then when you open pack two, those same odds repeat and you have a 1:50 chance at a diamond.
Think of rolling a die. You roll once and you have a 1:6 chance to roll a 6. You roll a 3. You roll the die a second time, it doesn’t then become a 1:5 chance, it’s still 1:6. When you open one pack in a bundle of 50, it doesn’t change the odds for future packs. You could roll 1 die 150 times and never roll a 6. Just like you could open 150 packs and never pull a diamond. It’s completely random. (Unless you buy stubs in which I’m convinced that increases your pack odds 
).