The shape of the diamond is largely determined by the rough stone. The majority of women prefer the classic round brilliant with 58 facets for the classic engagement ring.
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Inclusions are scratches or impurities seen in the stone. Changes in individual grades are often not noticeable with the naked untrained eye. The classic engagement rings are in the VS-1 to SI-2 range due to the cost in higher ranges and risk of impurities visible with the naked eye below that.
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Colorless is the most prized and is very, very expensive. Changes in individual grades are often not noticeable with the naked untrained eye. The majority of women prefer G to J and the near colorless range is the most popular classic engagement ring choice of diamonds.
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The weight is shown as 1/100 of a carat (eg: 1.00 ct) and 1ct = 1/5 gram. Large stones cost more than two of the equivalent combined weight. The average weight differs widely by area and economic status, with the classic engagement ring being in the 0.9ct range, yet based on budget this can differ widely.
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