How can you tell if dimond is real
A diamond can cut glass.
They cut other diamonds.
I heard that if you look into it with one of those round things jewlers have, then you can see the little speck of coal it formed from.
a real diamond will cut glass and only a diamond can cut another diamond!!
put a diamond in a glass of water and if you can no longer see it (turns invisible) then its a diamond!! =] x