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Oval diamond criteria

pinklemonadegurl

Shiny_Rock
Joined
Jul 24, 2013
Messages
373
My son is getting engaged and want mama's help. I have no experience with oval diamonds. Are there measurement requirements for ideal/best performance? Best ratio? I've seen more than one answer to that.

Thank you so much!
 
To me the ratio is what you like that is why you'll see multiple answers. If you like fatter ones than go fatter...same with
thinner/longer.

A little info to start with is that a lot that drives the look of an oval is the number of mains it has on the pavilion. They
come in 4, 6, and two different types of 8 mains. Super Ideals also come in 10 mains (wont be addressing them here).
The two different 8 mains are ones where the arrows go straight through the center and the more common ones where
the arrows are offset from the center (this is the majority of ovals you'll find).

In my experience, 4 and 6 mains usually produce the best light return. Having said that, you can find "good" and "bad" ovals
in every type so each stone needs to be evaluated on its own merits. Here is a marquise with the mains outlined. Basically
same for an oval. This is an 8 main with the arrows going straight through the center.

983192
When I evaluate ovals, I want to see how the oval reflects light as it moves. The easiest ones to evaluated are the videos where
the stone is lying at an angle vs. the videos where it is standing straight up and down (N/S). As the stone turns you want to see
more distinct facets come into view (vs. mushy gray facets). By distinct I mean well-defined and not blurry.

I'm talking about this area (in green). You want to see more "good" facets light up.
960455

As an example, I would say that the center of this stone lights up really well.

As an example of what you dont want...too much darkness going through the center, very mushy facets out
on the N/S ends (darker gray areas).

Hopefully that's enough to get you started. Happy to answer any more questions you might have or to help
evaluated any stones you might find.
 
My son is getting engaged and want mama's help. I have no experience with oval diamonds. Are there measurement requirements for ideal/best performance? Best ratio? I've seen more than one answer to that.

Thank you so much!

If you let people know the budget and an idea of preferred size, color and clarity, people can help you look if you like.
 
To me the ratio is what you like that is why you'll see multiple answers. If you like fatter ones than go fatter...same with
thinner/longer.

A little info to start with is that a lot that drives the look of an oval is the number of mains it has on the pavilion. They
come in 4, 6, and two different types of 8 mains. Super Ideals also come in 10 mains (wont be addressing them here).
The two different 8 mains are ones where the arrows go straight through the center and the more common ones where
the arrows are offset from the center (this is the majority of ovals you'll find).

In my experience, 4 and 6 mains usually produce the best light return. Having said that, you can find "good" and "bad" ovals
in every type so each stone needs to be evaluated on its own merits. Here is a marquise with the mains outlined. Basically
same for an oval. This is an 8 main with the arrows going straight through the center.

8 main marquise.png
When I evaluate ovals, I want to see how the oval reflects light as it moves. The easiest ones to evaluated are the videos where
the stone is lying at an angle vs. the videos where it is standing straight up and down (N/S). As the stone turns you want to see
more distinct facets come into view (vs. mushy gray facets). By distinct I mean well-defined and not blurry.

I'm talking about this area (in green). You want to see more "good" facets light up.
1 oval.png

As an example, I would say that the center of this stone lights up really well.

As an example of what you dont want...too much darkness going through the center, very mushy facets out
on the N/S ends (darker gray areas).

Hopefully that's enough to get you started. Happy to answer any more questions you might have or to help
evaluated any stones you might find.

To me the ratio is what you like that is why you'll see multiple answers. If you like fatter ones than go fatter...same with
thinner/longer.

A little info to start with is that a lot that drives the look of an oval is the number of mains it has on the pavilion. They
come in 4, 6, and two different types of 8 mains. Super Ideals also come in 10 mains (wont be addressing them here).
The two different 8 mains are ones where the arrows go straight through the center and the more common ones where
the arrows are offset from the center (this is the majority of ovals you'll find).

In my experience, 4 and 6 mains usually produce the best light return. Having said that, you can find "good" and "bad" ovals
in every type so each stone needs to be evaluated on its own merits. Here is a marquise with the mains outlined. Basically
same for an oval. This is an 8 main with the arrows going straight through the center.

8 main marquise.png
When I evaluate ovals, I want to see how the oval reflects light as it moves. The easiest ones to evaluated are the videos where
the stone is lying at an angle vs. the videos where it is standing straight up and down (N/S). As the stone turns you want to see
more distinct facets come into view (vs. mushy gray facets). By distinct I mean well-defined and not blurry.

I'm talking about this area (in green). You want to see more "good" facets light up.
1 oval.png

As an example, I would say that the center of this stone lights up really well.

As an example of what you dont want...too much darkness going through the center, very mushy facets out
on the N/S ends (darker gray areas).

Hopefully that's enough to get you started. Happy to answer any more questions you might have or to help
evaluated any stones you might find.

Yes, I see it. Thank you for the examples. I really appreciate it. Ovals are their own "thing" I guess. I'm well versed in round brilliant lol, but excited to help my son with this special "project". Thanks again. :)
 
HI:

Have a look here to see what well cut ovals look like.....


cheers--Sharon
 
HI:

Have a look here to see what well cut ovals look like.....


cheers--Sharon


These are the 10 main Super Ideals that I referred to above.
 
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