it was not destroyed because in order for the horcrux to be destroyed, harry would have to die. When the basilisk's fang pierced through his arm, he did not die because of Dumbledore's phoenix which is said to have tears that heal wounds. So the phoenix's tears healed Harry, so he did not die, so the Horcrux was not destroyed.
yes, voldemort accidentally left part of his soul in harry when he tried to kill him as a child.
It depends on the horcrux, are you talking about the one inside the Resurrection stone or harry himself. There is also nagini the real locket. You have to be specific
Tom Riddle was brought back in the 2nd book through a hocrux(the diary) that Voldermort made when he was younger...i think! -ginny opened to diary and she did something to unlock the horcrux
it is one of the 7 horcruxes that are needed by harry to finally destroy voldemort
The real Bellatrix Lestrange never really broke into Gringotts. Hermione used the Polyjuice potion because she was suspicious about the way Bellatrix was behaving in the Malfoy Manor because when she asked Hermione where she had got the Godric's sword she was really worried. They thought there might be a Hocrux in Bellatrix's vault, and there was. THIS TELLS NOTHING ABOUT HER WAND!
Nymphadora Tonks Remus Lupin Peter Pettigrew Fred Weasley Alaster "Mad-Eye" Moody Voldemort/Tom Riddle Bellatrix Lestrange Dobby Colin Creevey Ted Tonks Vincent Crabbe Gornuk the goblin Dirk Cresswell Antonin Dolohov Bathilda Bagshot 50 unnamed fighters in the battle of hogwarts Harry gets killed by voldemort, but because harry is the last hocrux, he gets the choice whether to live or die.
Nymphadora Tonks Remus Lupin Peter Pettigrew Hedwig Gregorovitch Severus Snape Fred Weasley Alaster "Mad-Eye" Moody Voldemort/Tom Riddle Bellatrix Lestrange Dobby Colin Creevey Ted Tonks Vincent Crabbe Gornuk the goblin Dirk Cresswell Antonin Dolohov Bathilda Bagshot 50 unnamed fighters in the battle of hogwarts Harry gets killed by voldemort, but because harry is the last hocrux, he gets the choice whether to live or die