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Diamond selection and thoughts- help!


gasrock24
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Can someone give me some insight into this diamond? It seems too good on paper to be sitting unsold for >1 year. What am I missing? I just recently discovered that excellent cut by GIA doesn't mean shit and that cut grade is more in depth. Some additional thoughts would be greatly appreciated. Thanks!

https://www.bluenile.com/build-your-own-ring/diamond-details/LD13172326?offerId=19010

https://www.stonealgo.com/diamond-details/gia-number-2348059954

Also these are the stones that were presented to me by the jeweler. Can someone provide some insight into how I can distinguish better between them? Are they any good? They all looked very similar to me in person and were similarly priced

1 https://www.gia.edu/report-check?reportno=5246444191 / https://www.stonealgo.com/diamond-details/gia-number-5246444191

2 https://www.gia.edu/report-check?reportno=7332390216 / https://www.stonealgo.com/diamond-details/gia-number-7332390216

3 https://www.gia.edu/report-check?reportno=2368384365 / https://www.stonealgo.com/diamond-details/gia-number-2368384365

Thank you so much in advance!

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6 hours ago, gasrock24 said:

Can someone give me some insight into this diamond? It seems too good on paper to be sitting unsold for >1 year. What am I missing?

I don't think you are missing anything. It's priced fairly close to top of the market, and since the inclusions are relatively easily visible in the video and photos quite a few people may be put off - especially by the largest crystal, right under the table (at 10 o'clock in the still photo, and reflected at 4 o'clock). Personally, I think since the inclusions are colourless, without magnification they won't be visible to a "normal observation", but there is a risk, especially in a fairly large stone. Also, it's a $20k stone - by no means "the most expensive diamond in the universe", but still way more than most people are prepared (or can afford) to spend; a 2-year old report is fairly normal.

6 hours ago, gasrock24 said:

I just recently discovered that excellent cut by GIA doesn't mean shit and that cut grade is more in depth.

Well, I wouldn't go that far. GIA Excellent as a standard for cut was deliberately built to be inclusive, rather than AGS Ideal that was built with exclusivity in mind. However, I've never yet seen a GIA Excellent looking 'bad'; I've seen those I like more, and those I like less (and some VG I like more than some EX).

On the diamond in question, for example, I have exactly zero criticism to offer in terms of the proportions in the report; looking at the video, some minor asymmetry is apparent (in e.g. the pavilion main angles/lengths), and I doubt this diamond would produce a perfect H&A image - but H&A is not the be-all and end-all, although H&A diamonds can be very nice, especially if you like highly symmetrical contrast patterns.

In practice, keeping the diamond clean is going to have more of an effect on appearance than the difference between a "perfect H&A" and this one... so you pays your money, you gets your choice. A decent steam cleaner is $200; a 1.85 ct E/SI1 from a top cutter could easily be $5,000 more.

7 hours ago, gasrock24 said:

Also these are the stones that were presented to me by the jeweler. Can someone provide some insight into how I can distinguish better between them? Are they any good? They all looked very similar to me in person and were similarly priced

I think the only way you'd be able to distinguish the ones with report numbers ending in 365 and ending in 191 is with a micrometer and a loupe... assuming the inclusions are not visible to the naked eye in either one. The one with report ending in 216 is cut a bit differently, and should seem visibly larger (again, assuming invisible inclusions), but possibly a bit less fiery (fewer coloured flashes) when next to the others.

All of them are decently cut, but if I were to choose based on the reports only, I'd go with the stone from Blue Nile (assuming similar price). On the other hand, you have seen the other 3 in person: presumably you liked them enough, and none of them have inclusions that bother you, despite somewhat scary plots. With the BN stone there is that risk... although that is mitigated by a good returns policy.

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