Slowly but surely I''ve been trying to gain info and knowledge and get ready for the e-ring I''d like to have put together in March. I''ll be having a custom ring from Whiteflash made and I was told that the melee would be ACA. I''m still trying to determine what my center stone size will be. I know anywhere in the range of .33 to probably .69. My question is how important is it to get the same quality of center stone. If the center stone isn''t ACA will it look dull in the setting compared to the ACA ? Also should you try to match as far as the color of of the center stone with the melee ? Thanks !!