pls forgive me if i sound completely clueless, but i just had a quick question about the color of my diamond. it is a 1CT, VS1, H color round brilliant, and i notice that it looks completely different in different lighting - sometimes it looks beautifully clear, others, it almost looks opaque white. am i just imagining it, or is this normal? is it b/c it''s an H color? thanks for any help you can give!