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Diamond Setting, to square the table or not?

kelmel

Rough_Rock
Joined
Dec 7, 2014
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85
I am getting ready to have a round brilliant diamond mounted in a 6 prong setting. Should the diamond table be "squared up" in the setting or should it be mounted "off square"? I've been told that often if the table is set to be perfectly square, the prongs are not placed where they should be. I have been advised there is a risk of the prongs resting between two facet planes (on the ridge). In addition, I have been advised that you never want prongs resting between two facets (on a ridge). Help!
 
kelmel|1417971087|3797223 said:
I am getting ready to have a round brilliant diamond mounted in a 6 prong setting. Should the diamond table be "squared up" in the setting or should it be mounted "off square"? I've been told that often if the table is set to be perfectly square, the prongs are not placed where they should be. I have been advised there is a risk of the prongs resting between two facet planes (on the ridge). In addition, I have been advised that you never want prongs resting between two facets (on a ridge). Help!

With six equally spaced prongs it doesn't really matter, your stone will be secured because you're guaranteed to have prongs pushing on facets angled opposingly. With four or eight equally spaced prongs the prongs should rest on the bezel facets or upper girdle meets unless you're trying to cover an inclusion and have a great bench - if positioned to grip the stone on the flats of the upper girdle facets (which will all be angled in the same direction) the stone will be compelled to "turn" within the setting so the prongs rest on the lower bezel facets instead (covering the arrow-tips).


From this thread: [URL='https://www.pricescope.com/community/threads/how-should-hearts-arrows-stone-be-set.94200/']https://www.pricescope.com/community/threads/how-should-hearts-arrows-stone-be-set.94200/[/URL]
DetailedProngsAndArrows2.jpg



[URL='https://www.pricescope.com/community/threads/8-prong-solitaire-settings.50911/']https://www.pricescope.com/community/threads/8-prong-solitaire-settings.50911/[/URL]
[URL='https://www.pricescope.com/community/threads/does-anyone-care-about-prongs-being-lined-up-with-arrows.197088/']https://www.pricescope.com/community/threads/does-anyone-care-about-prongs-being-lined-up-with-arrows.197088/[/URL]
 
I like offset better.
 
The photo called "offset" is what I call a square table. And that's what I prefer.
 
I like it set N-S - that's how I have my rb set.
 
I like the N/S better for some reason... What do YOU think looks better?
 
IMO, it doesn't matter because you and others will see it from many different angles as your hand moves around in real life.
 
I personally prefer offset. In a ring setting, I look at it all the time and it bothers me if it is not set that way. So figure out what you prefer and discuss it with your jeweler.
 
My new CBI diamond is set offset with both the logo and AGSL numbers on the girdle visible under 20x.
 
Once your stone is set, you won't even be aware of this. I cannot tell you right now how my H&A stones were set since I have now changed diamonds!!! I trusted the setter to set the stone right, and they did, multiple times!
 
There are two other possible variables to consider. If you've got an inclusion on the edge of the stone, you may want to set it in a way that covers it with a prong. Alternatively, if you've got a girdle inscription, most people want to set it in a way that DOESN'T hide it. You may luck out and be able to do all of these things but normally you can't get them all and you have to pick. This is purely a design question. Assuming we're talking about a stone above I1, it will have no affect on the durability risk. Usually not even then.
 
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