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CurtisA July 30, 2010

Does vintage diamond jewelry ever have diamond grading reports? @#191@#

When did it start becoming standard for diamonds to be graded by gemological laboratories? I own a vintage engagement ring that belonged to my husbands grandmother. Of course he didn't give me the diamond certificate when he proposed, but I was wondering if there was a chance that one exists somewhere. If not, can is it possible to get a diamond grading report on a vintage diamond?

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BarryA August 4, 2010

It is not likely that there is a diamond grading report for the diamond in your vintage diamond engagement ring. The Gemological Institute of America (better known as the GIA) only started issuing diamond grading reports back in 1955. The GIA first drew up the D to Z system of diamond color grading and the Flawless to I3 system for diamond clarity grading just two years early, in 1953, so no diamonds that were set into jewelry before 1955 could have had a diamond grading report. Even after the GIA's diamond grading system was installed, it took another few years before diamond certification became a standard practice in the diamond industry. Since you say your diamond engagement ring belonged to your husband's grandmother, I would take I wild guess that she got married at least 50 years ago, which means in 1959. Thus, chances are very slim that your diamond has a grading report. If it is important to you to get a diamond grading report for your diamond, it is never too late. The only thing is that in order to get your diamond tested by the GIA, it needs to be in its loose state, so you must get your diamond removed from its setting. If your vintage engagement ring is a fragile piece of jewelry, you might want to be extra careful removing the diamond from its setting. You should definitely not try it yourself. Instead bring your ring to a professional jewelers to have the diamond removed. Once the diamond is loose, you can send it to the GIA for grading and certification, which costs somewhere between $40 and a few hundred, depending on the carat weight of your diamond. (I'm assuming it's not 10 carats or above - because then the grading report might set you back a few thousand.)