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  1. denverappraiser

    How to respond

    I tend to ignore them because it’s hard to win an argument with idiots but, for your own peace of mind I’ll give you some data. Total worldwide diamond production in 2018 was148M carats according to the Diamond Producers Association. That’s rough stones. About 50-75% of that gets lost in the...
  2. denverappraiser

    When the GIA report says something different...

    For a diamond to be graded an Old European Cut by GIA, it must: Table size must be less than or equal to 53%. Crown angle must be greater than or equal to 40 degrees. The lower half facet length must be less than or equal to 60%. The culet size must be 'slightly large' or larger. Obviously...
  3. denverappraiser

    A message to the trade from one of my favorite rabble rousers, Martin Rapaport.

    GIA is a brand, probably the most powerful brand in the diamond business at the moment, but their reports do NOT answer all of the questions on the table either in terms of either diamonds or market. You need to look no further than the database here to understand that superficially identical...
  4. denverappraiser

    Jewelers that do not require appraisals?

    In answer to your question, there are plenty of insurance companies that will bind a policy based on a receipt and the lab doc. Most actually. Shop your insurance company. The appraisal is not for the benefit of the insurance company, it's for the benefit of YOU. See David's comments above...
  5. denverappraiser

    Should we discourage or recommend FL stones?

    I think the answer to the question is no, we shouldn't discourage or recommend FL stones. It depends on the details. They're cool, if you like it. FWIW, I do. Others don't. That's a difference in the customer, not the stone. Under most viewing environments it has no visible effect. This too...
  6. denverappraiser

    Should we discourage or recommend FL stones?

    The vast majority of people spend the vast majority of their time under lighting with zero UV component. UV has no affect. Incandescent, LED, halogen, argon, and most commercial fluorescent lighting all come in at barely detectable. Sunlight filtered through most glass has rather little. Shaded...
  7. denverappraiser

    Best place to buy MMD online?

    One of the annoying attributes of the GCAL light images is that no one else uses their approach. That limits comparison. One of the features is that no one else uses their approach. If you ever see the images, they were all taken directly by GCAL, and GCAL has been extremely consistent in...
  8. denverappraiser

    Best place to buy MMD online?

    Call 'em up at the contact information on the report itself. Email is probably the best because you can include the report number on the stone you're asking about. Their full contact info is at www.gcalusa.com
  9. denverappraiser

    Best place to buy MMD online?

    I spoke with Angelo who confirmed the above. Although they don't publish them on their final reports, they can provide you with all 8 underlying measurements on request.
  10. denverappraiser

    Best place to buy MMD online?

    I'll ask the people at GCAL but I'm pretty sure they use the same rules as GIA. It's a bit strange. There are 8 measurements that are used to generate the pavilion angle. They're first truncated, then rounded, then averaged, then rounded again to the nearest 0.2 degrees.
  11. denverappraiser

    Possible to Replace Setting with Bigger Diamond? (Specifics included)

    Talk to whoever made or sold you the setting. Some of them are designed to be pretty flexible, some are very specific. It's all in the details.
  12. denverappraiser

    Value versus price? How do the synthetics really compare to naturals?

    No they aren't, and they haven't for decades. Even decades ago the stockpile wasn't warehouses full unless you're talking very small warehouses. DeBeers is a public company, along with most of the other big miners. They report their inventories every year. They report their production, they...
  13. denverappraiser

    Value versus price? How do the synthetics really compare to naturals?

    Here's a PS search for 1.01-1.10/GIAxxx/SI1/G. Under $5000. There are 161 stones listed and they range from $3954...
  14. denverappraiser

    Value versus price? How do the synthetics really compare to naturals?

    I see a lot of diamonds, both mined and made, and a lot of them claim ideal cutting. I've yet to see a lab grower that comes close to the PS super-ideal types for precision cutting.
  15. denverappraiser

    Value versus price? How do the synthetics really compare to naturals?

    Rap is not a good metric for 'wholesale' on either category although I agree, that's what the factories want you to do. It's pretty easy to directly compare. The PS database has a zillion natural stones for sale. Pick a set of specs and search. Leave off the top half or so because of the...
  16. denverappraiser

    Value versus price? How do the synthetics really compare to naturals?

    This is not correct. It's more like half, maybe a little less. There are some subtleties that make it difficult even to call it that. The category of super-ideals that's so popular here is effectively non-existent in synthetics for example. Lab grading standards are different. The growers...
  17. denverappraiser

    Value versus price? How do the synthetics really compare to naturals?

    The leverage is different. The fear with synthetics is that they will drop drastically, like 90%, because of some technological change. I don’t think they will, but if I had to bet my business on it, I wouldn’t be making that offer. To be fair, I wouldn’t offer it on mined stones either. Will...
  18. denverappraiser

    Value versus price? How do the synthetics really compare to naturals?

    If a manufacturer has the markup, trade-up is no problem. Buy a widget for $100, sell it for $300, and offer a $300 discount on a purchase of $600 or more. Bring it on. It doesn’t matter what the resale of the used item is. This is especially true if there are restocking fees, resetting fees...
  19. denverappraiser

    Value versus price? How do the synthetics really compare to naturals?

    Hardly any vendors of anything have buyback policies. Outside of a certain limited amount that falls under warranties, say the first 60 days after purchase, I can't think of a single one. Cars? Houses? Electronics? Food? Artwork. I applaud your policy, but it's an unreasonable expectation for...
  20. denverappraiser

    Advice on selling diamond to upgrade

    I'd be willing to bet against this. We've been seeing that prediction for at least 10 years since the synthetics have become a serious product and it hasn't happened yet. Why not? The problem is that the process of manufacturing what people here call a diamond involves a lot more than a grower...
  21. denverappraiser

    How to source a diamond from a wholesaler

    Contact the wholesaler and ask them for a referral to one or more of their dealers.
  22. denverappraiser

    Ashes to Diamonds on Shark Tank

    90% of the deals on Shark Tank never come to fruition. Usually, it's the entrepreneurs who bail. What they want there is the immediate bump in sales and credibility that comes from being on the show. This was a 15 minute free commercial in prime time. The Sharks were being played. Put another...
  23. denverappraiser

    Anyone for a massive Old Mine Cut or two? 15ct and 26ct?!

    Age does not, of itself, add much value. Provenance might, but that depends on the ownership history more than age. Most old Old Miners don't have this kind of precision in symmetry but some do. Are these particular stones antiques? I don't know. Maybe, maybe not. I'm with you in guessing...
  24. denverappraiser

    Advice on selling diamond to upgrade

    DeBeers is not selling 1 carat stones for $800. They are selling approximately 1 carat total weight pendants and earrings set in silver or 10k for $800/carat plus $100 for the mounting and have someone else reset the stones. You can't buy loose stones at all and the bigish ones are mostly 'out...
  25. denverappraiser

    Advice on selling diamond to upgrade

    If you are going to be selling to a dealer, let them send it in. They know how to do it (and they will). They can buy based on the girdle inscription. If you're selling to a consumer, get the piece of paper.
  26. denverappraiser

    Why local jewelry BM stores offer a lower price than internet GIA diamond?

    The dossier style report is fine. That's what everyone will have. The reason I question the listing you posted, beyond the fact that this is always a question, is they call the cut 'ideal'. This is a word GIA doesn't use. It does not appear in their scales or on their reports. At least that...
  27. denverappraiser

    Why local jewelry BM stores offer a lower price than internet GIA diamond?

    Make sure that you and they both agree on what. “GIA graded” means. I suspect it’s not the same.
  28. denverappraiser

    Wife Droped Diamond...

    This one looks pretty good for $7.50 if you're not too picky. I've seen them as low as $2.50. David Atlas sells a pretty nice one for $12 plus a little bit of shipping. The problems with loupes come in the color rendition and the edge-to-edge resolution. The one I use on a daily basis was...
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