I'm looking to buy a pair of diamonds to set into solitaire earrings. The prices on some online retailers seem so much lower than at the usual jewellor I go to. For intance, my friend just bought a 1.17 ct F VS2 vg-vg-vg diamond for about US$11,000 at the jewellor but I'm looking at 1.2ct E/F VS2 diamonds online for around US$8,000. Does anyone have any experience with these online retailers like BlueNile, Abazias etc? Any recommendations?