Diamond shopping I

So now I m given a homework to find information about diamonds online. According to Dear, this is to allow me to know what I want to look for and to choose the diamond of my choice. But all the information I found gives almost similar things. What I really need most is the comparison amongst the jewellery shops in SG. Luckily I have friends who have quite a good knowledge abt diamonds and I must really thank shimin for feeding me with all the information that I need! And we have the same great taste for celestial diamonds! Thanks so much! I think we might need to go down to the shop soon to see and feel it for myself :D