The value of gold engagement ring is determined by theirs grading under the 4 Cs, color, clarity, cut and carat weight.
a flawless loose diamonds 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.
diamond earrings is the hardest of all gemstones; it is the simplest in composition; it is ordinary carbon. Colossal heat and pressure, over the eons, crystallized the jewelry into what it is today.