GRS Gemresearch: Unusual Phosphorescent Pebbles Identified as Synthetic Aggregates
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- čas přidán 24. 04. 2016
- Read publication: gemresearch.ch/phosphorescent-...
Phosphorescent pebbles are presented in the market as natural rounded pebbles (3.53 density) possessing extraordinary properties such as green phosphorescence when exposed to a strong light source and patchy blue to green fluorescence in short- and long wave UV-light, again with green phosphorescence (no blue).
Such items appeared multiple times in the last two years at our laboratories. They are sold at very high prices of thousands of US dollars per piece or sometimes even per carat. The first specimen we have tested, initially appeared in Burma (Myanmar) in 2014. Similar material appeared as carvings on the Chinese market according to an article published on the website of the Gems & Jewelry Trade Association of China.
The analyses showed that this material is a synthesized aggregate material (Figure 4). The material was first synthetized in Russia in 1976 as Sr4Al14O25 and published by Nadezzhina (1976), Kristallografiya, 21, 826. The literature from Chinese researchers (Chengkang et al. 2006) confirmed that this type of material was later doped with Europium (Eu) on Strontium (Sr) position, which creates phosphorescence.
Detailed XRD analyses revealed that the material we had tested also contained a minor secondary synthetic phase of SrAl2O4 in addition to the material mentioned above, actually identifying the pebbles as an aggregate of two structurally different synthetic substances. Additional ED-XRF analyses confirmed the elements Strontium (Sr) and Aluminum (Al) but showed that instead of Europium (Eu), the major REE element was Dysprosium (Dy). - Věda a technologie
Just last week I was approached by a gem dealer with exactly same pebble and I was surprised to see that much phosphorescence. Until know I wasn't sure about it. Thank you for posting this video, and research references. Now I can educate others about it.
was so happy too find this channel now seeing only 42 uploads before watching them im already sad theres so little uploads lol
Amazing
Good bless
From Wikipedia/2019: Dysprosium is a chemical element with symbol Dy and atomic number 66. It is a rare earth element with a metallic silver luster. Dysprosium is never found in nature as a free element, though it is found in various minerals, such as xenotime. Naturally occurring dysprosium is composed of seven isotopes, the most abundant of which is 164Dy.
Dysprosium was first identified in 1886 by Paul Émile Lecoq de Boisbaudran, but it was not isolated in pure form until the development of ion exchange techniques in the 1950s. Dysprosium has relatively few applications where it cannot be replaced by other chemical elements. It is used for its high thermal neutron absorption cross-section in making control rods in nuclear reactors, for its high magnetic susceptibility in data storage applications, and as a component of Terfenol-D (a magnetostrictive material). Soluble dysprosium salts are mildly toxic, while the insoluble salts are considered non-toxic.
Super
Show de bola linda pedra ai vai o meu layk.. show.
Nice
how much is it
Wow amazing
روعه وحلو الشرح
I had purchased one of these stone pendant from Ali express in 2018. It was a green pendant smaller in size with the same photo Luminous property, the seller called it Luminous Flourite stone. But the strange thing is that I had locked it away in a suitcase for months and when one i opened it up it had a faint afterglow. Now i have Masters degree in physics so i was a little worried. There are 2 types of these stone, one is Lighter shade of green in appearance with less of the sparkling on the surface, this one glows green, blue green and sky blue. Then there is another one which is Dark green in appearance and has lots of sparkling on the surface, which glows Dark blue. Under short wave UV, they fluorescence and when u swtich off the light u can see it phosphorescence, both green in colour.
are you saying it might be nuclear reactor waste material?
@@gristlevonraben No, it's Strontium Aluminate mixed with jade or Aventurine powder with epoxy resin as the binding agent.
@@deepaknair2472 thank you
Where can we sold this types of stone, can I get details
super
Very naci
Gostaria de saber se essa pedra e radioativa. E essa caneta de luz e própria para avaliar pedras?
Wooow,,,, beautiful 😱😱😱😍
Could u plz give me any idea how much it cost???
Per caret per gram ??
Lanterna é ultra violeta?
hello Sir How searching stone tell me
Muito bom parabéns Visitando seu Canal pra deixar um super like👍🙏
(Eu sou do Brasil)
I'm from Brazil,
Your video is Show !!
My LIKE!!!
Pedras Raras Brasil helo
Sklama1982@gmail.com
You may contact
Ok!!
Beautiful stone
Voutei pra dá um lindo laik Deus abençoe você é sua família gostei muito da pedra linda parabéns Deus te abençoe
شنو يعني
اذا اكو عربي شنو المضوع
I have
Bela pedra
How much can cost can u please do let me know cause i do have same stone ....thx
ok I will pay u 9000
It will cost over 5 lakhs in international market
Can u tell me how much cost for this in dolar..
the price of these stones varies from source to source, and depending on the size of the stone, or carving. The ones I have seen range from around $7 for very small 1.5 inch stoned to $120 for a large 4-5 inch stone though some people mark them up much higher in hopes of making a large profit from the sale if they can find an unsuspecting buyer. The carved prices go for more mainly because of the work involved in manufacturing the carvings, and that the carvings are slightly more rare.
It reminds of hialite opal!
Yes Opal stones can glow like this.
ok
👍👍👍👍😍
Thats the sort of rock you need to smash supermans windows
Gavo Kai
We call that snake stone! i have original piece very hard to find if you lucky you will get 1 or more😄
Where at?
I have also a small piece.. what is its name and hoe its cost is ?
I don’t understand this. Is his a fake
Stone? I found one in China in a cave amongst some others? But no gem dealers or anything - just in the cave??? Can’t figure what stone it is
This particular stone described in the video is "man-made" and can not be found in nature.
Hello Dalin Waldo, may I please see your stone? if it doesn't look like the lab grown specimen in the videa you may have stumbled across an extremely rare supposedly naturally occurring Ye Ming Zhu stone. It is said that perhaps only 23 of these ancient naturally phosflorecent stones are in circulation, as opposed to the many interesting yet synthesized so called "modern ye Ming Zhu" as shown in this videa. Ifinfact you happen to have stumbled across an authentic rare Earth element stone you may be holding onto one of the rarest stonedon Earth, and a very valuable piece... But if it so happens that you don't want it I'd be glad to take it off your hands 🤗
@@gemresearch When is your channel going to make more gem videos. Love the chennel
Hi @@offimatrix4897. Glad you like it. More content coming soon!
@@basilmaurer8425 , sir I have the real glow in the dark pebbles stone in my hand now... It very very heavy, much heavier than metal, and the glow last much longer, perhaps 15 x time longer than this video... You can test it.. I would like to know also... My WhatsApp, Viber, Zalo, Telegram +85510943956
what price of this leazar
$50/gram
There's lot of them man made Pebbles around now, If you smack them together thy will smell of burning stuff also thy glow and with light what you did.
O want one how can i get??
contact Available me
akik jamal
Stay connected
👌👍💐
lol
ماذا سيما هذا النوع من الحجر
You said it’s a synthetic stone that can’t be found in nature but I found exactly the same but in nature
send me the chemical and crystallographic findings, before that I cannot comment on that. It would be a first in the world and normally that should trigger an important publication. We made our analysis at the University of Berne (Switzerland) and have the data on x-ray and chemical composition with us, securing what I said in the movie. If you are a scientist, we can compare data by e-mail.
@@gemresearch sorry for replying late and thanks for replying. No I’m not scientific but the exact you in the video a have it so I’ve you any plateforme that I can send you video just tell. And if is the same stone you’ll know it even but videos and pictures
@@gemresearch I’m still waiting for your response. I’m just gems founder and I found exactly the same stone if you don’t believe just give me any account that I can send you video or you can direct video call me . Thanks
wow
假石头……缎玉……切开……全石头'
That's not jade. It's a potato from Mr. Burn's nuclear plant.
LMFAO 😂
tomojulitaiga do you ever go to school of science?
Might have fooled me
+905348388017
masih ada gak ni bos
Sisri Sisri...sy juga punya batu begitu...kalau mau lihat..bgtau ya
Epul Ijam mana coba saya liat. bisa kirim kan ke meseger saya. Atas nama Ryan Abdi foto propil Real madrid
Ok...nanti sy kirim gmbr sama video
Epul Ijam oke saya tunggu y mas
Ryan...Whatsapp boleh ke
ايش الترجمة ماذا تكلم عن هذا الحجر وكم سعرها . هل هي ثمينة .
هذا حجر مشع وهو خطير قد يضر .
👍👍👍👍🌺🌺🌼🌼🌻🌻🌺🌺
هاويه الاحجار عندك حجر يخليني قوي والناس تخاف مني او يخليني انشفي من الرضوض
I don’t get it,so is fake or real🥴
It is a "man made" product. So it is not something that is found in nature.
Meh! I just bought 4 from China for 54$😭😢Thanks
pleas say me this plaice
Indai 09429465799
سبحان الله
Emerald
Nha minh co một cục dá nhu z
M
i also have this stone . please tell me where to sell this stone and can i get detail?
Boa tarde amigo
🇧🇷🌏😎
👍👍👍👍👍👍
Chung ping Tang
야광물질 재료같은데..
ट
hola como estas
انا يمني وعندي بكثره حجار غنيه بالمعادن ولا حجار الكريمه ممكن نتواصل
ماهو اسم هذا الحجر من فضلك ومما يتكون
ممكن هذا رقمي 00212697564827
abrar
If you actually kmewnwhat that was
C 2 tell me, I'm all ears.
asif
NO…NO……NO