I saw a diamond today that was F in color and SI3 in clarity. It was an EGL certed diamond so I know those specs probably aren''t accurate. The diamond faced up white and it had two small white inclusions that I could see. One was tiny and white and could easily be covered by a prong. The other was like a small thin line (maybe a twining wisp? on the table. It had a lot of fire and sparkle, and according to the notes on the cert, the cut achieves maximum brilliance. It had excellent symmetry and very good polish. My concern is that I didn''t see a ton of inclusions...I saw it in natural light by a window and I was straining to find something while looking at it from all angles. I couldn''t find a single black spot. Are my eyes fooling me? Can SI3 diamonds have inclusions that are hard to see with the naked eye? The two inclusions I did see are found when looking at the diamond very close and of course --I was trying hard to find them.