Question is too vague.
Surf to the right until you find an island he should be there
There is no Third Island in Pokémon Crystal
find all the necessary items. to make glass fine sand is on crystal island (swim to it from the first island)
After beating the gym leader on the island a girl is standing there, you have to go talk to her
Volcanoes, crystal clear water, turtles that are believed to be extinct, and a beautiful sight.
you go to six island, go to dotted hole, and use cut at the door. it will open. when you find the crystal, someone will steal it and go to the rocket hideout. it will be there.
crystals
Have you unlocked it? To unlock it you have to go to the palace/ temple on the third island and fix the forge. THen a note will say, a new island has risin from the earth. it is between pier beach or something along those lines. You should take a boat to there. Crystal Island is very small and pretty confusing. Nothing really significant about but that you can only find fine sand there.
One can find crystal in crystal veins in the Earth's crust. These veins can be located using mining maps. Quartz crystal is the most common form of crystal and the easiest to find.
you can find lugia in on whirl island in the caves, after you received a silver wing from a man in pewter city. (still can`t find lugia? you can find a guide video on youtube.) GOOD LUCK!!!
It is in Black Widow's dream, in the second painting near the upper right side.
you go in the water by whirl island