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Is a Guild report reliable?

CircularBrilliant

Shiny_Rock
Joined
Nov 21, 2013
Messages
313
Hello, in my continuing hunt for a ruby, I came across a piece that looks lovely, but has a lab report that I am not familiar with -- a Guild Gemological Report. I did a search, but wasn't able to find much discussion of it. Does anyone know whether this lab is reliable? I assume the report's characterization of the ruby as "pigeon's blood" is really not worth much, but can I trust what the report says about origin and treatment? Thanks!
 

T L

Super_Ideal_Rock
Premium
Joined
Sep 20, 2008
Messages
25,214
For rubies, I only trust these labs:

AGL (American Gem Lab in NYC -beware of lab reports using the same acronym)
GiA
SSEF
GRS

Rubies are some of the most highly treated and/or synthesized gems. Never purchase a ruby (unless you’re paying so little and you don’t care) without at least one of those four lab reports.
 

CircularBrilliant

Shiny_Rock
Joined
Nov 21, 2013
Messages
313
For rubies, I only trust these labs:

AGL (American Gem Lab in NYC -beware of lab reports using the same acronym)
GiA
SSEF
GRS

Rubies are some of the most highly treated and/or synthesized gems. Never purchase a ruby (unless you’re paying so little and you don’t care) without at least one of those four lab reports.

Thank you!
 

LilAlex

Ideal_Rock
Premium
Joined
Mar 3, 2018
Messages
3,642
I see China and LA and have not heard of either one. (I mean Guild, not those places :cool2:.) And I have heard of a lot of labs.

As @TL says above, ruby-buying is not for the faint-of-heart. i would expect a mainstream lab report.
 

CircularBrilliant

Shiny_Rock
Joined
Nov 21, 2013
Messages
313
I see China and LA and have not heard of either one. (I mean Guild, not those places :cool2:.) And I have heard of a lot of labs.

As @TL says above, ruby-buying is not for the faint-of-heart. i would expect a mainstream lab report.

Thanks! Seems like this one has to be a pass. The hunt continues :)
 

dagongren

Rough_Rock
Joined
Dec 21, 2020
Messages
17
Their color grading tend to be loose. But their origin and treatment results are reliable.
 
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