Best Engagement Rings Diamonds Forum

Vintage Diamond Ring – Quality Issues

I recently inherited my grandmother’s engagement ring complete with the original sales certificate. It was purchased in 1945 in NYC and the quality is known as quality “A”. From all the research I’ve done so far, I can’t find anything that speaks to quality with the letter A. I see that color cards start at D, so I’m curious what this can translate into in today’s quality lingo, for lack of a better term.

It is definitely of high quality and is one of the sparkling diamonds I have ever seen in real life.

Ring and certificate image link:

Thanks in advance!

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