yes. Ron destroyed it with the sword of Gryffindor in the seventh book.
The seven Horcruxes were:Riddle's DiaryMarvolo's RingSlytherin's LocketHufflepuff's CupRavencalw's DiademThe last one was Harry himself. When Voldemort put the Killing Curse on Harry the horcrux inside him was destroyed.
The horcruxes are: Salazar Slytherins locket, Tom Riddles diary, the ring, Nagini, Harry, The lost diadem of Rawenclaw and The golden cup of Hufflepuff. Ron destroyed the locket with The sword of Griffindor. Harry destroyed the diary with a basilisk fang. Dumbledore destroyed the ring with the sword of Griffindor. Nagini was destroyed by Neville with the sword of Griffindor. The diadem was destroyed by Crabbes Fiend fire in the book, but Harry destroyed it with a basilisk fang in the movie. Hermione destroyed the cup with a basilisk fang. I hope that answered your question ;)
The Horcrux which is Slytherin's locket that turns out to be a fake.
Riddle's diary. Every HCX has been destroyed by a different person: Harry Potter (diary), Albus Dumbledore (ring), Ron Weasley (locket), Hermione Granger (cup), Vincent Crabbe (diadem), Tom Riddle (Harry Potter), Neville Longbottom (Nagini).
Pick any four from these: diary ring locket cup diadem Harry Potter Nagini
Slytherins Locket, Marvolo's Ring, Ravenclaw's diadem, Hufflepuff's cup, Nagini, Tom's Diary, and Harry himself
Voldemort made seven Horcruxes. Harry destroyed one in his second year and Dumbledore destroyed one just before his sixth year which left five Horcruxes to destroy (although he only thought there was four). In the end, every Horcrux was destroyed by different people (Harry, Dumbledore, Ron, Hermione, Crabbe, Voldemort, Neville)
Yes, but it required a Parselmouth.
It is Slytherin's locket.
2 movie Tom riddles diary and marlovo gaunts ring 7th movie Salazar slitherins locket 8th movie helga hufflepuffs cup. Rowena ravenclaws diadem. Nagini and Harry potter
The fake locket Dumbledore died to obtain in Harry Potter & The Half-Blood Prince.
Not too big. Just the size of a regular locket on a necklace.