size of diamond
- Thread starter Sopy
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Andelain
Ideal_Rock
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Sopy|1451192986|3966662 said:
You asked the same question in this thread. [URL='https://www.pricescope.com/community/threads/what-is-the-difference-between-84-and-90-stone.218342/']https://www.pricescope.com/community/threads/what-is-the-difference-between-84-and-90-stone.218342/[/URL]
1 carat is 100 points and well cut should be 6.5mm. A 0.84 point would be about 6mm so half of a mm smaller than 1 carat, so between 0.84 and 0.90 you are talking about fractions of a quarter mm, look at a ruler and divide a mm into 4 and that is a quarter mm so smaller than that. Diamonds however shine bright so these fractions seem to look more.
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Some .90's are bigger than .84's, and some .84's are larger than some .90's. As others have said, all you have to do is compare diameters. And use those parameters I gave you in another thread to narrow down your GIA Excellent cut diamonds.
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So this question depends on a few things. Are we talking about identically cut rounds of a different ctw, or different shapes, or the same shape but different cut quality.
So we'll start with the easiest. Two rounds of ideal cut, with the size be noticeable? To most, no. As its about the different of a mm all around. That is negligible. Typically you need about 2-3mm to notice a difference. Sense you will not be wearing a .84 and .9 next to each other, on the hand the size will not be noticeable
Two different shapes? Now that's going to look very different depending on what shape. There are a few shapes that, in general , look large for their ctw. Pears, marquise, and ovals come to mind. Cushions, asschers, emeralds usually look a tad smaller for their ctw. Now, this is generally here. Some diamonds are "deep" or "shallow" for their particular cut. A deep stone will hide ctw in its bottom, a shallow stone will do the opposite.
This takes us to the last option. Maybe you're comparing two similar shapes, like a round, but the cuts are different. One is ideally cut, one is not. The ideal cut stone will look its weight. It won't be too deep or shallow. You can't say the same for a poorly cut one. Typically they are cut to save a ctw. So, lets say they could cut an ideal cut stone at .8cts or a fair cut stone at 1ct ... They'll cut it fair to reach that 1ct mark. So, in an example like that, both a .8ct ideal cut stone and a 1ct fair grade stone could both be 6mm across
So we'll start with the easiest. Two rounds of ideal cut, with the size be noticeable? To most, no. As its about the different of a mm all around. That is negligible. Typically you need about 2-3mm to notice a difference. Sense you will not be wearing a .84 and .9 next to each other, on the hand the size will not be noticeable
Two different shapes? Now that's going to look very different depending on what shape. There are a few shapes that, in general , look large for their ctw. Pears, marquise, and ovals come to mind. Cushions, asschers, emeralds usually look a tad smaller for their ctw. Now, this is generally here. Some diamonds are "deep" or "shallow" for their particular cut. A deep stone will hide ctw in its bottom, a shallow stone will do the opposite.
This takes us to the last option. Maybe you're comparing two similar shapes, like a round, but the cuts are different. One is ideally cut, one is not. The ideal cut stone will look its weight. It won't be too deep or shallow. You can't say the same for a poorly cut one. Typically they are cut to save a ctw. So, lets say they could cut an ideal cut stone at .8cts or a fair cut stone at 1ct ... They'll cut it fair to reach that 1ct mark. So, in an example like that, both a .8ct ideal cut stone and a 1ct fair grade stone could both be 6mm across
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