Diamond Query: Difference Between One Color Grade and Trusting Online Sellers

| Anonymous Reader


Hesitating between these two diamonds. I want the best cut, sparkle and brilliance and therefore I’m tempted by the Astor certification on the 2.18 carat. At the same time, the 2.19 has no Astor certif but is up one notch on colour, down two on clarity and less expensive.

However some local diamonds specialists indicate that the Astor certification doesn’t mean anything since some other aspect, not on GIA certificates might have their importance (milky, oily, hazy,..) when it comes to brilliance… A bit lost, to be honest. Thanks in advance.

GIA certif for the 2.18 Astor:

GIA Certificate 2185709123 for the 2.18 CT Astor


GIA of the 2.19ct:

GIA Certificate 2195709140 for the 2.19 CT Diamond

Your Diamond Teacher |

Thank you for your inquiry. I am happy to help!

You will not see the difference between one color grade. An E and F will look the same. And you will not see the difference between an IF and a VVS2 clarity. I could put an IF and a VS2 together and you wouldn’t see the difference!

In addition, GIA doesn’t recognize marketing labels such as “Astor cut”. It is assigned by the retailer. You can choose whichever one you instinctively like better. They are both excellent diamonds. If you want to get real nit picky, the 2.18ct has perfect crown and pavilion angles. So, if I had to choose between the two, I would pick this one.

| Anonymous Reader

Thanks for the quick feedback!

The 2.18 is on sale online by bluenile while the 2.19 is available with a local broker where I live (Geneva). Obviously, this last indicates that I shouldn’t trust online seller for such a purchase.

Any views/experience with online seller. He indicates most stones from BlueNile come from India…..

Thanks again!

Your Diamond Teacher |


There are many reputable and excellent online diamond retailers, such as Blue Nile, James Allen, Brilliant Earth, Brian Gavin, and White Flash. You can trust each of them. And they offer excellent customer service.

And some of the diamonds may come from India, but what does that matter? They are GIA graded. 🙂