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  3. davidelevi

    Please help me pick the better ACA

    I am based in the UK, but the business is a US business. We do ship internationally - and once you remove the distorting effects of duties and taxes, "internet" diamond prices are the same globally (unlike "high street retail" where costs can be wildly different from one country and even one city or location to another).
  4. diamondfinder

    Please help me pick the better ACA

    Hi Davide, Are you based in UK? I checked diamondbylauren.com and found it is in NY. I have a friend who travel to London often and she is looking for one stone.
  5. davidelevi

    Please help me pick the better ACA

    Congratulations! Looking forward to seeing photos!
  6. Yesterday
  7. diamondfinder

    Please help me pick the better ACA

    Hi Neil, Much appreciate for your feedback to my post. I have read many threads and comments/reviews by you in some diamond forums; and I really like them. The fact is flying to US and to Houston is in my very far future. But surely I will visit not only WF if I have chance. I am diamond lover and enjoy knowing about it. Yeah, I am in finalizing with the G stone and hope come back soon to show the bling! Wish all very good health!
  8. diamondfinder

    Please help me pick the better ACA

    Thank you Davide for very detailed and direct answers. Now I know which diamond to go to😊 Report post Posted 21 hours ago No, sorry, I meant that anyone, including experts, would struggle to tell them apart from a cut quality point of view!!! If you have seen them, and the I seemed tinted, then go for the G. Somewhere between I and J is where most people start seeing colour; given there is practically no price difference, I would go for an SI1 that I cannot see against an I that I may be able to... Both are fantastically well cut. You are paying a premium for that, and other people may prefer something a bit larger or cheaper. Me? I'm a cut snob... 1 × Quote Davide
  9. denverappraiser

    Please help me pick the better ACA

    The heart of this is the balance between weight, clarity, color, and price. Not so much cutting. G/SI1s generally cost more than otherwise similar I/VS2s. Heavier stones generally cost more than lighter ones. The reason they’re recommending the G/SI1 is that all things being equal, it’s a better ‘deal’. When you shop it, which I assume you’ve done, the dealer comes out looking better in comparison to other dealers with similar goods. The missing element is YOU. Do you prefer G to I or would you prefer something slightly bigger for less money? That’s about taste, not gemology. If you haven’t seen what real diamonds look like, go shopping. Maybe even go to Houston and look at Whiteflash. They have a showroom there. (Note: If you do this, make an appointment and let them know what you expect to see. Not all or even most stones on the website are in the store). Most jewelers don't bite and there's no obligation to buy. Tell them what you're thinking, ask to see what they have, and pay attention to what they have to say.
  10. denverappraiser

    Uniqueness of diamonds

    The weakness is in the value chain. The miner knows where they found each stone. Also when, what tools and techniques they were using, which workers were involved, what part of the mine and all sorts of other details. Not tracking these things would just be bad management. The same happens at the cutter. They know what they paid, where and when they bought it, who worked on it, what results they expected and how it worked out. Anything less would just be stupid. They know who they sold it to, when, and for how much. The whole supply chain looks like this. It’s not that the data isn’t there, it’s that they don’t want to pass it along for any reason short of a court order. Why not? Money. A lot of this is proprietary information, it’s extra work and extra exposure to track it, and there’s no extra money for those who do it. Customers claim they want to know, but when it comes time to pay, they’re happy enough without it. They want it if it’s free. Yeah, right. That’s why I’m suspicious of these blockchain type claims. What the blockchain adds to the program is to protect the data from tampering. That’s interesting, and possibly even useful, but it's solving a problem that no one has.
  11. LaurentGeorge

    Uniqueness of diamonds

    Having worked on the rough side of the diamond trade, I am always fascinated by the concept of being able to actually track a specific stone. Aside from large "special" stones, 10 cts +, most rough is sold in parcels. Rough dealers buy from various sources, then combine similar lots (not necessarily from the same source) and divvy them back up to best suit their business or their customers' needs. Manufacturers buy these mixed parcels and sell off rough they do not want to cut, either to other manufacturers or back to dealers (again, not necessarily where they bought from). I'm not talking about the vast quantities of small rough stones below 1ct, but even stones in the 1 to 10 carat range get treated this way. So the idea of actually tracking the life of a stone might be as difficult as tracking a specific $10 bill. There are of course some companies that are more vertically integrated and make a point of tracking this path and use it as an endpoint selling proposition, but that is a small minority of the business.
  12. Last week
  13. davidelevi

    Please help me pick the better ACA

    No, sorry, I meant that anyone, including experts, would struggle to tell them apart from a cut quality point of view!!! If you have seen them, and the I seemed tinted, then go for the G. Somewhere between I and J is where most people start seeing colour; given there is practically no price difference, I would go for an SI1 that I cannot see against an I that I may be able to... Both are fantastically well cut. You are paying a premium for that, and other people may prefer something a bit larger or cheaper. Me? I'm a cut snob...
  14. diamondfinder

    Please help me pick the better ACA

    Thanks Davide for your response. Yes, I am really struggling and because i am first time diamond buyer. I absolutely have no clues about the real stone. So many factors need to be considered when choosing one. In theory, I prefer VS2 over SI1, but I color seems more yellow when the staff put them side by side. And is I color much lower graded/favored in diamonds? Do you think either stone worth buying? If you were shopping for a diamond, would you choose one of them? Thanks a lot!
  15. davidelevi

    Please help me pick the better ACA

    I think you'd struggle to tell them apart, and there will be no perceptible (or possibly even repeatably measurable) difference in brightness. One ASET (or hearts view) isn't in any way better than the other. The difference in diameter may be just about visible with the two stones next to each other, but not once they are set and/or examined separately. Colour is a bit of a moot point with well cut stones seen from the top rather than from the side (and G vs. I). Inclusions - yes, there's more "stuff in the SI1; it doesn't mean it's more visible. Ultimately, I think it comes down to whether you prefer one or the other on purely theoretical grounds...
  16. diamondfinder

    Please help me pick the better ACA

    Hi, I am buying a diamond and after reading quite a lot from internet resource, I just found out this forum which I think I can get more confident. Here are the 2 diamonds I am interested in https://www.whiteflash.com/loose-diamonds/round-cut-loose-diamond-4022281.htm and its AGS https://www.whiteflash.com/pdf/104100872034.pdf the second one https://www.whiteflash.com/loose-diamonds/round-cut-loose-diamond-4113552.htm and AGS report here https://www.whiteflash.com/pdf/104105373014.pdf My concerns are: I like the first stone as it is bigger and it seems to have a better ASET image, especially the center, more precise...however, the staff from WF advised me to buy the 2nd stone which has better color but smaller and more included - SI1. She said she personally viewed the 2 stones and looked at them under magnifier. The most concerned thing to me is the face up view of this stone less bright than the other. Its ASET image shows this as some imbalance in the center and in some shaft tips. I really need a second opinion on those 2 stones to make final decision. Thanks a lot in advance
  17. davidelevi

    Uniqueness of diamonds

    When you are done, please post us a link to your thesis, if your college/university allows! Would be interesting to read.
  18. Alex_g

    Uniqueness of diamonds

    Hi all, Thanks a lot for your constructive comments. I'll just skip the statement that says diamonds are unique by default. It was just a really small part of my thesis where I'm talking about supply chains of luxury goods.
  19. denverappraiser

    Uniqueness of diamonds

    Sarine.com is offering exactly this service for approximately that reason. They are a large and well established company in the industry. Mine to finger provenance. It’s the underlying technology for the everledger people If you want to make even a remotely scholarly paper, make you understand the concept of ‘blood diamonds’. That’s a PR term that doesn’t mean what people tend to expect. Blockchain is designed to make it difficult to alter records. It does that quite well and it’s a darling for investors. Anything with the word ‘blockchain’ in it is a topic of discussion. That doesn’t make the underlying data valid, useful, or even true. The problem, and the solution, of so-called blood diamonds mostly has to do with do with local power in the source countries. Everledger doesn’t have anything to do with that. What they do is connect the word blockchain to diamonds, and that’s an advertising opportunity in the west. That has merit, but it doesn’t sound like what you’re looking into.
  20. davidelevi

    Uniqueness of diamonds

    I'm afraid you have found no such argument here. At least so far.
  21. davidelevi

    Uniqueness of diamonds

    I think you misunderstood my remarks. The existing process of diamond identification (without blockchain) works perfectly well without anyone needing to use a more sophisticated process. The metadata that would enable you to track a piece of rough (which is how blood diamonds are typically traded - and BTW the blood diamond issue was largely solved 10+ years ago with the Kimberly process) would be destroyed in 99.99% of the cases once the diamond is cut. The metadata that would enable you to identify a large (>3.00 ct) diamond can easily be altered in a number of ways that still leave the diamond very resellable, especially as a rough. The very abundance of smaller diamonds (<0.30 ct), their relatively low value and the lack of adequate unique characteristics to produce the metadata without having to resort to (very expensive) atomic-level scanners and high-precision positioning equipment to perform the scan in a consistent way are all factors making the application of blockchain to those diamonds unlikely. The two articles are - I am afraid - largely written by people that have no idea of what they are talking about on the subject of diamonds. If I have time, I will dismantle some of the fallacies in the academic paper. The Fortune article is largely an advertorial.
  22. Alex_g

    Uniqueness of diamonds

    Hi davidelevi, First of all thanks a lot! I think I'll find enough references based on your comments (I cannot use a forum post as a reference). Blockchain can help in achieving trust in the origin of a diamonds (e.g. it's not a blood diamond) since it is to be able to digitally track a diamond’s journey from mine to a consumer in a tamper-proof way. The literature criticizes that there is no way of achieving physical trust by blockchains since there is no "real" connection between the data stored in a blockchain and the real world goods. My argument is that for diamonds this is not the case since every diamond is unique and thus once the metadata (the unique properties of a diamond) and the respective certificates are stored in the blockchain there is no way to replace a diamond in a later stage of a supply chain. So it's more about proving the real origin of a diamond. I just needed an argument that it's verifiable that a diamond entered in the first step of a blockchain cannot be replaced at a later stage. If you're interested in this topic I would recommend you to have a look at Everledger, a startup that is using the blockchain technology to improve the diamond supply chain. Here are some interesting articles and papers: http://ecis2018.eu/wp-content/uploads/2018/09/2038-doc.pdf http://fortune.com/2017/09/12/diamond-blockchain-everledger/ Best Alex
  23. davidelevi

    Uniqueness of diamonds

    Hi Alex, welcome to Diamond Review! The current technology for the identification of diamonds relies on a few, very simple tools: a source of light, a loupe, a micrometer and gem scales. There isn't a major issue in "trusting" the results of that technology; diamonds can be identified easily and cheaply and there are very few if any disputes in this respect- the issue if anything is in trusting the grades provided by one vendor (or grader/lab) since they have a significant impact on fair price, but the grading decision is ultimately a judgement expressed by a (set of) human being(s) on whether a certain stone is (say) D, E or F colour. How would blockchain help? On the statement that every diamond is unique, I would say that it depends very much on what you consider "unique". At the atomic level, I'm pretty certain that it is right. At the macroscopic level, it's almost certainly false: smaller diamonds (say up to 0.10 - 0.20 ct) are rarely graded individually, and there is relatively little to distinguish them from each other once they have been sorted into fairly homogeneous groups as to cut, clarity, colour, shape and weight. However, the value of these diamonds is quite low individually, so why would a "blockchain-type identifier" be used?
  24. Alex_g

    Uniqueness of diamonds

    Hi, First of all, this is probably the wrong place to ask for. I'm currently writing my bachelor thesis. One statement I'm using is that Blockchain technology can achieve physical trust in diamonds trading since (as far as I know) every diamond is unique. That means no diamond in the world is equal to another. Does someone here have a good reference for that so I can confirm this statement? Thanks in advance!
  25. davidelevi

    Don't buy from B2C Jewels

    Maybe. And all of this happened in January, but you post this in May and without photos to show the incredibly bad quality?
  26. Earlier
  27. I regret the moment when I came on the B2C Jewels website through Diamond review website. I was getting a very good deal on the diamond with the signup discount. I was so happy initially for the ring that I had ordered with B2C. I had requested for the GIA inscription to be visible while mounting the diamond on the ring. On 2nd Jan I was informed that it would take 5-7 business days. And then the fooling process started.There was no email sent to me while I waited for the status. I had a chat with them on 11th Jan & I was informed that the jewelry team is still working on my ring. I was under the impression that a very elegant & beautiful ring is being made and hence it was delayed. I patiently waited to hear from them.On 14th Jan, I again had a chat with them to check the status and this time I was promised that the ring would definitley be shipped by 16th Jan. I kept consoling myself for the delay thinking that the quality of the diamond ring would make me forget the botherations. This was my biggest mistake here.Once again, false promises kept me high till 18th Jan. I once again had a chat with the team & I was informed that the ring is still with the production and someone would get back to me with the status. When i expressed my disatisfaction, I was only treated with Apologies... What surprised me is that there was nobody to take an ownership of $11K ring. I then received an email stating that the ring did not pass the quality check. What was this Quality check all about and why was this not seen or checked while the ring was in production? There was prongs issue and the diamond did not sit right. I understand that something like this can happen but why this cannot be seen while the final shape is being given to the ring. i had my doubts and I asked for the images to be sent to me before shipping the ring. It was already over 20 days and I was still waiting for the pictures of the ring. My entire proposal was disturbed and this was very frustrating to me. I wish someone out there could understnd how it feels when a proposal keeps getting delayed. B2C shared images with me and guess what, my condition of GIA inscription was not met. Also, the prongs were uneven. I was forced to think was I shopping with a Jewelry company ? I was at their mercy and this was awful. It felt miserable. This was not the end. Then comes Mr. Patrick ( who is supposedly a Manager, which I genuinely doubt ) who is never available on his seat. I was actually expecting Mr. Patrick to take control of my order and relieve me of the hurdles. Mr Patrick infact added more to my agony and the worst customer experience that I ever had. Once again I was informed that the repairing work is done and the pictures of the ring were shared with me. I was so aggravated to see that the prongs were still not aligned and were uneven. B2C is supposed to be in the jewelry business for over a decade and this is what I was told and they cannot even have a decent ring ready in 25 days? I was concerned about the money I paid them. Don't believe this Fraudulent & Dummy Manager Mr Patrick. He doesn't even speak properly and possibly does not understand any proposal commitment. Don't trust them and their words for the product / services. B2C will only give you pains and worries and of course missed proposal schedules.
  28. davidelevi

    on the hunt for the perfect emerald

    It's within the OP's declared budget of $75k, but it's significantly more than the other one - which may have been picked precisely because it's $40k. $20k is not pocket money to 99.99% of people. That's all I'm pointing out.
  29. Sumsum

    on the hunt for the perfect emerald

    better color, clarity, fluorescence, make (light return). do you find it expensive ?
  30. davidelevi

    on the hunt for the perfect emerald

    And a 50% higher price... which may or may not be acceptable.
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