Because fancy shaped gold engagement ring are not symmetrical like round ideal cut, a broader range of parameters are needed in regards to proportion.
a flawless diamond earrings is no more beautiful to the unaided human eye than a grade in the middle of the scale. Once again, extremely subtle differences in clarity are very important to determine rarity, but only affect beauty when in the very low end of the scale.
ideal cut diamonds featured with ten gorgeous oval rubies and three diamond studs in yellow gold is a wonderful collection of wedding gifts.