First, please forgive me for my poor english vocabulary.I don't remember exactely the date of the event, but i know it was in the middle of july, in 2002. I was smoking a cigarette on my balcony (i live on the 4th floor), it was about 9:30pm. The sky was completely clear,the day had been very shinny, and the evening was too.I was quietly looking at the sky, and suddenly my eyes has been attracted by a small point, very high in the sky. First, i thought it was just a plane, but after 10 (ten) minutes, i realized it was completely motionless. Surprised, i went to my bedroom to take my little telescope (x30), and when i came back on the balcony to observe it, i saw a black losange! The form was a perfect losange, and it was so black that i first thought there was a hole in the skies! It made no sound, there wasn't any light or any flame retiring.I couldn't valuate its dimensions, it seemed to be very far above me. I observed it during 1h30 (one hour and a half), and it staid completely motionless during all that period.I fell nothing particular during my observation. The night was falling, and at 11:00pm, i couldn't see it anymore.I didn't tell anybody about this story. Today, i still wonder what i saw.