Yasu has that ring for sale in Japan 
right now on his website I’m hoping that they didn’t lift the picture because I believe it’s about $6000, $250 just doesn’t make sense
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It is not the same ring but it’s the same type of work, thank you!
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I see you intend to contact Bob already.
It’s either from that same artist on yasu site or it’s a copy but worth 250 bucks to investigate
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I have been told everything from old inventory in safe of jewelry store, to actual stone cutters of 70s lander verified it, on and on then when you drill down on whom and will they sign this etc. they dissapear. You have to wonder if its real deal why not take it into any jewelry store and make 20x what you just paid for it, this makes the statistical likelihood super low, but still fun to hope!
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Here is a collection of Lander Blue for sale by Mike Ryan II.
https://www.turquoiseinamerica.com/store
He recently wrote in his blog about X Ray Florescence (XRF). A way to test for turquoise mine origin without destroying the cab. It is a great read even though it is a bit over my head. I sure enjoyed reading it and think you all may too.
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That’s a great start @here4turquoise . When using the XRF to test soils, EPA protocol requires that the sample be ground up to obtain a homogeneous sample for analysis. When sampling hard rock, element concentrations can vary with each change in location sampled. I would like to see a statistical analysis (including raw data for comparison) of several hundred data points on many stones sampled for each mine. I also question extrapolation of elements not detected by XRF. In scientific terms that is called a guess (unless backed up with another confirmatory analysis). With so much variation within the same mine, I’m not convinced the method is there yet.
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I really appreciate your thoughts on the blog. Like I mentioned, this is way over my head. From what I have read in some of your posts, this is right up your alley.
Here is a link to purchase a pdf containing 71 pages of data. It’s $10. It would not be worth it to me but maybe it would you.
If you do purchase, I would like to hear your feedback.
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I appreciate it. However, this is a private document prepared in house and IMHO to make money and promote their business, not a peer reviewed published study. Means nothing to me but thank you.
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I haven’t read the doc but I’m sure it has good technical details. However, to authenticate Lander Blue–a 1973 find, after all, just 50+ years ago–it’s simply impossible to exclude provenance. If it looks like, walks like, and quacks like LB, it still isn’t Lander Blue without a clear, plausible provenance. At least that’s how I’d approach a purchase if I were in the market.
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I get that and understand.
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I agree and know I would never be in a position to purchase Lander Blue as it is WAY out of my budget.
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It’s good you further this type of discussion @here4turquoise . Those not of a scientific background (as is the case with anything) can be lead down a potential misleading path. For a time I was involved with an international XRF study to characterize antique Chinese porcelain enamels and glazes to distinguish between genuine and fake Qing Dynasty porcelain. I began with my own collection and soon realized what a daunting task lay ahead. I realized that it would take more than just XRF and moved on. My XRF is EPA approved and I would never use an analysis to quantify a specific turquoise.
A study to fingerprint turquoise to a specific mine in my opinion is a monumental study due to the variations in turquoise compositions. At this point I’m in agreement with @chicfarmer on purchasing genuine Lander Blue based on provenance.
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You are an asset to this community. Thank you for taking time to clarify XRF. I appreciate you and @chicfarmer
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Get your Lander blue…only $500. 
I have no idea if that is a fair price or not but I wouldn’t spend that kind of money at SGW. 925 Sterling Silver Vintage Lander Blue Turquoise Pendant 7.21g | ShopGoodwill.com
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I’m more inclined to think it’s Chinese Cloud Mountain.
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Come on, you folks doubt the greedywill’s ability to ID a specific turquoise. I see they provided no reference as to the ID. I know, let’s trust them. 
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I hope whoever buys it (it’s now up to $600) doesn’t come on here telling us about the wonderful piece of Lander Blue turquoise they bought.
I don’t even particularly like the pendant. And I agree with @Islandmomma. I was thinking that’s a boatload of money for a little pendant with a piece of Chinese turquoise.
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You know, I know there’s major issues with Goodwill nationally. But I just want to say our local Goodwill does a LOT of good in our city. They have some great jobs programs. And I know this from people who know firsthand.
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Haha they probably will come on here to brag about it, that would be too funny.
I think it’s a beautiful stone, but it’s more likely to be Chinese than Lander Blue. Besides probability and lack of provenance, there’s the fact that it’s set in such an unimpressive pendant. Lander has always been a coveted enough stone that the setting and metalwork it’s set in is usually something special too.
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You are correct it is a nice little piece of turquoise; I just was so unimpressed with the pendant.
I also don’t understand why people spending that much money on something like that don’t try to get more knowledge about it. I know the old expression about there “being a fool born every minute,” but really? In today’s day and age it is not hard to do a little research before we plunk our hard-earned dollars down.
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