Oval cut diamonds have many facets giving them a similar brilliance to the traditional round stone, albeit with a more unusual shape. You can choose the oval from the various elongated options available by selecting the stone according to the length-to-width ratio.This diamond shape from Hatton Jewels will certainly give you plenty of sparkle no matter what oval you go for. Always bear in mind that traditional oval diamonds have a ratio of 1.5:1.0 where the length of the stone is about 1.5 times the width. So if you decide on a design that places the oval stone along the finger, a higher ratio is considered to be more flattering because it has a lengthening effect on the hand.