A-List Jeweler
  • Content Count

  • Joined

  • Last visited

Community Reputation

564 Excellent


About davidelevi

  • Rank
    Ideal Diamond

Profile Information

  • Gender
  • Location

Recent Profile Visitors

10167 profile views
  1. davidelevi

    Happy customer of alister grant auctioneers :) :)

  2. davidelevi

    GEL certified tennis bracelet

    That makes two of us. Unfortunately, setting up a gemmological lab requires no vetting; it's up to you to do the vetting and decide whether the lab can be trusted - the default answer is no. If they aren't correct (and/or the information about treatment is incorrect), then any conclusions about "good deal" are invalid, at least financially. You may still like the item, and find it an acceptable replacement for your stolen bracelet, which is a different definition of "good deal". FWIW, given the diamonds are ~0.05 ct each, and I assume they still sparkle, the clarity is almost certainly correct: it would be hard to go lower without the stones looking like industrial diamonds. Colour is anybody's guess (especially from a photo), but again given the size of the stones the face-up visual difference between F and I is minimal. There are two things that - in my view - contribute more than anything to looks (and certainly contribute significantly to price), and those aren't mentioned: diamond cut and quality of the metalwork. There is no evidence about the former, and the latter seems rather clunky (based on the photo). To sum it up - I can't answer your question about colour and clarity with any level of certainty, much less any question about value. All I can say is that I would not buy this because of how it is constructed, regardless of any consideration about the stones.
  3. Those are fine... if you know how to use them (and it's trickier than it seems with mounted stones). Also, especially with non-rounds or squares, the L x W proportion of the gauge is almost never right, which is why I would rather use a micrometer or a caliper. Don't get me wrong - better than nothing; FWIW, assuming that the omega clips at the back are more-or-less normal size, I would have guessed 1.50 ct per earring or thereabouts...
  4. davidelevi

    Diamond Virgin (Engagement Ring)

    It's completely different from your first choice other than for the price... and that confuses the heck out of me. Are you looking for a solitaire or a 3-stone? Centre stone round ~0.70 ct. or princess ~1.00 ct? That aside, I simply would not buy (or recommend) a "pre-set" ring, given that you can choose from thousands of diamonds that are likely to be better cut than a vendor's choice, yet cost no more.
  5. Are you sure about the size? Round 2 pointers should be about 1.6 - 1.7 mm, but if that's the case, the baguettes are at least as wide, which means they should be 8-10 pointers (3.5 mm x 1.7?) Also, from the photos I count 13 x 2 rounds in each earring, and 15 baguettes, but it's difficult to count the baguettes. If I'm right, then 0.02 * 26 = 0.52 rounds 0.09 * 15 = 1.35 baguettes Total 1.87 cttw per earring, or ~3.8 cttw for two earrings. This is guessing at the measurements - do try to get a caliper around at least one of the rounds and to measure width and length of the most accessible of the baguettes.
  6. davidelevi

    Diamond Virgin (Engagement Ring)

    Horses for courses... Some people like to spend less, others like the reassurance of the large chain, and others still opt for the (usually) higher level of service and personal attention that one gets from a local, family-owned shop. No-one is wrong. The design you like is not an uncommon one; here is a similar setting on Blue Nile* https://www.bluenile.com/build-your-own-three-stone-ring/three-stone-pave-diamond-engagement-ring-14k-white-gold_58245 and here is a list of 20 or so stones equivalent (?) to the centre stone in Kay's ring https://www.diamondreview.com/diamonds?sortOrder=price&sortDesc=1&fShape=Rnd&fCaratLo=0.75&fCaratHi=0.80&fColorLo=I&fColorHi=I&fClarityLo=I1&fClarityHi=I1&fCutLo=&fCutHi=poor&fDepthLo=50.0&fDepthHi=80.0&fTableLo=40.0&fTableHi=80.0&fSymLo=&fSymHi=poor&fPolLo=&fPolHi=poor&fCulLo=&fCulHi=vlarge&fFlrLo=&fFlrHi=vstrong&fPriceLo=0&fPriceHi=1000000 The setting in 14 kt white gold costs $850, the most expensive equivalent (?) stone is $2,200. Total a shade over $3,000 at standard prices, which is less than half Kay's normal price and a good 40% less than their promotional price. The reasons why I keep repeating (?) after the word equivalent are two: 1. Kay's really give very little information on the diamond they are selling. They don't tell us anything about cut - Tolkowsky as a firm generally sell nicely cut stones, but they have different lines and cut grades. In addition, although Kay's say "Each Tolkowsky® diamond ring comes with a certificate of authenticity and independent certification of the center stone.", there is no indication who is doing the "independent certification" - and that may make a fair amount of difference in what you are getting. 2. The (supposedly correct) grading of the stone is I-I1. There are all sorts of I1, from those that look very very clean, to those that a dog's breakfast looks down on. Not only this makes a significant amount of difference on whether you like the stone, it makes for a huge range of prices. So, with all the caveats in the world, I would hesitate in defining Kay's offer as "a good deal". Whether the convenience of having a nation-wide network of shops vs. an online-only or local-high-street-only presence is something you value is something only you can decide. * I'm not recommending that particular ring style, nor that you shop at Blue Nile (which incidentally is a competitor of mine, just as is Kay's); I'm just bringing this up as an example of something similar available and to get a reference on price.
  7. davidelevi

    25 Gram raw .. Diamond or Quartz

    Geologically it's more likely to be quartz or even a piece of glass debris - depending on how far away from "civilisation" you were where you found this. The frosted appearance of the smooth facets vs. the relative brightness of the broken-up surfaces also makes me think this is not very hard material (vs. diamond!!!), but as repeated several times on this forum, ID from photographs is a thankless and largely impossible task. On the other hand, a gemmologist should be able to rule out several things, including diamond, very quickly and safely, once s/he has the stone in hand. Nice photos, BTW.
  8. Hi Peter! A carat is 100 points. Yes, just measure, look up and multiply, and of course if you are looking for the total total, then roughly x 2 to account for there being 2 earrings (they may not be identical and the stones in one may be smaller, so you may multiply by 1.9 or 2.1 depending on which one you measured). Bear in mind that this is quite approximate - say +/-25%; if you need more accurate estimates, you'll need to get a micrometer and measure each stone's depth as well as the length and width, then use a more accurate formula (which I can dig out from somewhere if needed, but I can't remember off the top of my head). This assumes that you have enough space in the setting to actually take the measurements... which is not at all a given. Otherwise, the only precise way of getting the weight is to unset and re-set the stones, which is going to cost you a large amount of money relative to the +/-25% uncertainty!
  9. Without a scale/size reference it's a totally impossible task. On the other hand, you may find this useful for the baguettes (rectangular cuts) and this for the rounds - ignore the sieve numbers and look at the diameter
  10. davidelevi

    Looking for ruby engraved diamond ring

    Are the deference patterns obsequious, respectful or just plain brown-nosing?
  11. I don't want to be rude either, but you asked for an opinion. I've only been collecting minerals and gems for next to 50 years, and the first thing I said is that ID from photo is impossible, and the last is that my opinion is - and remains - that it is quartz, but I could be wrong. Counting "points" (as you call them) is not a valid method for identifying anything, especially when it's clearly broken, abraded and/or polycrystalline/amorphous as the rocks in the picture. Conchoidal fracture (I assume that's what you wanted to say) is typical of quartz and many other minerals, including diamond. There are a couple of stones that show what could be conchoidal fractures (in a polycrystalline aggregate), but the fracture is not a distinguishing factor; the macro-aggregation of crystals is: diamonds don't tend to do it. The only piece of advice I gave you is to go to a gemmologist with the samples. I have just repeated it.
  12. ID from a single (and poor quality - sorry) photo is impossible, but ID from photos is pretty much impossible even if you have many and excellent quality ones. Take the stones to a qualified gemmologist, and you'll get an ID (or at least a ruling out of diamonds) very quickly and with high probability of being correct. FWIW, based on the photo, I'd say you have a bunch of quartz pebbles, but I could be very wrong.
  13. davidelevi

    Opinions on these diamonds pls - which is better cut

    That is the same design as Laings' - except that since it's a CAD drawing it looks neater... 😉 Bear in mind that the brands I suggested were suitable if the main point was the "suspended" look (my wrong assumption at the time!); a crossover setting can be built (with good quality and reliability) by many more people than a tension setting.
  14. davidelevi

    Opinions on these diamonds pls - which is better cut

    The Laings setting has a crossover design; this is when the prongs "cross" from one side of the setting to the other (red lines): what it doesn't have is a bridge (blue line), or rather the bridge is built - rather ungainly in my opinion - with a big welding of the four prongs underneath the stone (diagonal green line below), and then to stiffen the design and seat the stone without having visible lateral support two cross-bars have been added at 90° to the shank, and welded to the cathedral struts (horizontal green line) Have you actually seen and liked this "live", not on a website? FWIW, if you got someone to replicate this design, casting would most likely not be the way to do it; fabrication from wire would be where I'd start from. I can also anticipate that a fair few people would not want to follow the design, and would advise you to do something else; in part out of conservatism and "not invented here" syndrome, but in part out of the sincere view that it is not a well engineered design. If what your girlfriend likes is the idea of the stone being "suspended", have you looked at tension settings? Kretchmer, Gelin Abaci and Danhov are three big names in the US, and Niessing in Europe. Abaci, Danhov and Kretchmer are examples of jewellers that "will take responsibility", since their reputation for uniqueness is largely about the settings, not about the complete jewel.
  15. davidelevi

    Opinions on these diamonds pls - which is better cut

    It depends on who you pick. People that primarily do metalwork as a source of earnings will generally take responsibility (and insurance) for client's stones while they work on them. People that primarily sell stones (e.g. Brian) may decline to do so, but even that varies, and you may be pleasantly surprised when asking. I can't comment on Brian's settings, because I haven't (knowingly) seen any that were custom-made, but what sort of custom work are you thinking of? (Lost) wax casting isn't necessarily the best method for all designs...