Everyone is Savable to point. There IS ONE! unforgivable sin. Yes, that sounds incorrect I know, but the Bible says in Matthew 12: 31 - 32 " Wherefore I say unto you, All manner of sin and blasphemy shall be forgiven unto men: but the blasphemy against the Holy Ghost shall not be forgiven unto men. And whosoever speaketh a word against the Son of man, it shall be forgiven him: but whosoever speaketh against the Holy Ghost, it shall not be forgiven him, neither in this world, neither in the world to come." That quote is from a Nelson King James Version Bible.
What that means to me is, if someone says that the Holy Ghost is not real and denies that It has ever existed is speaking against It. Those are atheists. If they do, however, have a doubt that the Holy Ghost, Jesus, and God have and do exist then they may still be saved, but those that have no faith in and speak against the Holy Ghost can not be saved. Therefore, according to the Bible, not everyone is savable.
Also, someone earlier in this post said that everyone will eventually be saved, that is also incorrect. There will be people who do not make it into Heaven due to the fact that they never accepted Jesus Christ as their personal Saviour, and therefore will spend an eternity in the Lake of Fire.