He bled in Astonishing, when Shaw illusion hit him... he believed he's real so his blows had a real effect on him... t'was explained way back in UXM when Xavier told Logan not to believe in the fake chasm.
Actually, Danger was extremely confident she could kill Emma in her diamond form. On Breakworld when she crashed Emma and Scott's ship, Emma thought Scott was dead, so she told Danger to kill her. When she hit her, Emma turned into Diamond. Then Danger was like, I can easily kill you in diamond form.
Yea that why I dislike whedon, dispite some of the cool wolverine even like taking Danger and Orb at once, or taking 20 kids at once and beating them so completely that he had them piled up
I am in your algorithm learning all your mannerisms
I'm already level with God
A million words a second and I know your imperfections, baby
I'm the only future you've got
Speak in diatonics, motivation diabolic
I'm like a religion, better locked in a box
Picture perfect image, more powerful every minute, baby
I am everything that you're not
Reason why I believe Wolverine cuts her cleanly and easily is simple. She really not proven her self against piercing attacks or at all the much in terms of durability many characters have far define and prove durability. Thing,WWH, WWH,Namor,Grey Hulk, Tiger Shark, Thing, Ba'al,M-11 self and force field which has withstood, colossus cyclopes and emma I believe, Red Hulk, Titanium shackles that easily held Hercule, King Thor Thanos with the infinity Gauntlet and so on. All of these characters so far more then others are established durabilities beyond anything Emma has shown. To assume that she would be able to withstand Wolverine claws with out her showing nearly the durability of characters Wolverine has cut is simply by logic. She also was broken by a diamond bullet at her flaw, then there no reason Wolverine who claws easily cut through diamonds should not be able to cut her any were. She also shown the be damage and bleed from her nose in Diamond form, to compare her to be more durable then Colossus is a ridiculous stretch back by nothing. Colossus does not even bleed and has proven his durability countless times by far greater damage then any Emma has shown.
Yes, Emma does turn into Organic Diamond, just like Colossus Organic Steel, and Bobby's Organic Ice. Beast said so when he was testing her the 1st time it happened. He said something like you're fully organic diamond. Congratulations, we're the 1st mutants with secondary mutations. Then they had a panel of Beast and Emma doing a hand clasp.