(Closed) Certified Diamonds

posted 5 years ago in Rings
Post # 3
Member
699 posts
Busy bee
  • Wedding: November 1999

@heathuhhhhwebbbb:  I wouldnt consider a non certified diamond under any circumstances.. with such a large purchase you want to know what you’re getting.

Saying it’s ‘certified’ just means its been examined and given the 4 c’s by an expert gemologist.. there are 3 groups (that I know of) that certify diamond GIA, AGS, and EGLI.. GIA is the best/ strictest with thier standards AGS is second, EGLI is third. I would personally suggest GIA cetified.. you’ll know its been examined by the best of the best.

I haven’t considered laser engraving because I feel like I would know because I stare at it ALL the time. Plus most stores will let you examine it under a loupe yourself before and after so you can see that the inclusions etc are still there. If you’re really worried you can bring thr paperwork that comes with the diamond with you to the store before and after they take it to get work done etc and match up the inclusions. My FH did this when we got our stone set.

Let me know if you have more questions!

Post # 4
Member
3331 posts
Sugar bee
  • Wedding: November 1999

AGS is not “second” to GIA.  In fact, many consider them to be superior because of stricter clarity and color grading. 

EGL is a mixed bag: EGL USA is the strictest, but even there, it depends.  I’ve seen EGL stones graded colorless that wouldn’t make near colorless for GIA or AGS.  EGL Israel etc, you are probably talking grade inflation of at least one or two.

In My Humble Opinion, grading has gotten much more lenient for all the labs, particularly where clarity is concerned.

For a fee, GIA will grade and laser inscribe a diamond.  It must be out of its setting, and is graded table down.

Post # 6
Member
751 posts
Busy bee
  • Wedding: November 2013

@doberman:  AGS doesn’t grade stricter than GIA. In fact, a stone that is certified VS1 by AGS is often certified as SI1 by GIA. 

Post # 7
Member
3688 posts
Sugar bee
  • Wedding: August 2013

@Stargaze31:  I think you’re mixing up AGS with EGL. AGS is very well respected.

Post # 9
Member
751 posts
Busy bee
  • Wedding: November 2013

@BelliniChic:  I mean that AGS is more lenient with giving a good grade. They are more likely to give a VS1 when in reality it is an SI1. 

Post # 10
Member
751 posts
Busy bee
  • Wedding: November 2013

@cmbr: I didn’t say they weren’t well-respected. I just said they tend to be more forgiving when it comes to clarity grading. 

Post # 12
Member
3688 posts
Sugar bee
  • Wedding: August 2013

@Stargaze31:  I’ve never heard anything like that. Where are you getting your information? GIA/AGS grading is essentially equivalent, although AGS will grade for light performance. I heard of one or two instances of color being one grade off between the two on several stones but never anything about clarify. If AGS was consistently undergrading clarity by two grades, they wouldn’t be well respected.

Post # 13
Member
6360 posts
Bee Keeper

GIA and AGS are both equally strict, one slightly stricter on color and the other slightly stricter on clarity (only by one grade or less), but neither are particularly overgenerous graders, and the overall quality estimates they provide are about the same, which is great, you can have confidence in both.

The fact is, a stone with good grades from AGS or GIA is very unlikely to be a dud. I prefer GIA, but that’s a personal preference. You still have to check them out in person though, and away from jeweler’s lights. And, I’d always suggest checking its HCA score and/or idealscope/firescope image.

I wouldn’t trust an EGL report, not even EGL-USA. I’d trust my own eyes much more than whatever that document says.

Post # 14
Member
3331 posts
Sugar bee
  • Wedding: November 1999

@Stargaze31:  You are confused. And incorrect.

Post # 16
Member
3331 posts
Sugar bee
  • Wedding: November 1999

AGS vs GIA

By Bryan Boyne G.G. (GIA) , Friday, September 07, 2012 8:33 AM

AGS compared to GIA – conclusions

Both labs are highly respected. Both labs perform consistent and dependable grading. For customers interested in obtaining in-depth information related to the cut quality and light performance of their diamond, the AGSL report provides a far better analysis.

@Stargaze31:  I’m outta here. Bye!

The topic ‘Certified Diamonds’ is closed to new replies.

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