Where is the light source? Could be if it''s not directly and I mean directly overhead of this stone (centered) under the light, you will have these white spots light up. They are reflections of some facets that are lighting up ununiformly. They are however equally there around the stone. You''re just not seeing them. If this helps, you''ve been reading too many of Ira''s posts.
They usually come from the upper girdle facets.
They may not be evenly spread if the table of the diamond is slightly tilted.
They hold little or no relevance to the appearance of the diamond