💎 Are your Diamonds REAL? Using Presidium Diamond Tester & Diamond Screener with Tanja Sadow | JDMIS
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- Опубліковано 22 тра 2024
- How do you tell if your diamond is genuine? What is a diamond Simulant? Why don’t we have a field ‘test’ for synthetics? What is ‘screening’? Join Tanja Sadow, Dean of JDMIS and Armani Shariff from Presidium Instruments in a discussion about diamond testing equipment. Learn the difference between genuine diamonds and simulants like moissanite, and how to use diamond testing tools to tell them apart. You’ll also see how to differentiate between synthetic lab-grown diamonds vs natural diamonds using the Synthetic Diamond Screener II by Presidium.
If you’re interested in expanding your knowledge in precious gemstones, you can find more details about the Jewellery Design and Management International School’s popular certificiation course in Gem and Jewellery Trade Secrets: go.jdmis.com/GT100-yt
This professional certification programme includes many topics on gemstone testing, jewelry testing, gemology and jewellery trade practices, including a full day on Diamonds, diamond value, testing, certificates and more.
Outline:
0:00 Understanding Diamonds vs Diamond Simulants
1:17 Using a Diamond Tester - Testing Genuine Diamonds vs Diamond Simulants
7:44 Understanding Natural Diamonds vs Synthetic Diamonds
9:57 Using a Diamond Screener - Testing Natural Diamonds vs Synthetic Diamonds
DISCLAIMER
This video was filmed before the Circuit Breaker was implemented on April 7th 2020.
Knowing about gems from Tanja is always helpful for me. Another important video for all of us. Thanks Tanja 🙏
Dear Laila, I'm glad that you find my content helpful! My team and I will try our best to make more useful videos in the future!
This is excellent and huge value to determine which one is a real Diamond.
Thank you for your positive feedback! We are glad you found value in our diamond testing video.
Great video. But with natural diamond v synthetic diamond, you say that 100% of synthetic diamonds do not absorb UV light. But I thought lab grown diamonds can fluoresce under UV light? (which presumably means they must absorb UV light). What have I not understood?
Newcomer to the industry here, getting some due diligence in. Thanks so much for the Adamas demo and the informational overview. Incredibly helpful.
Glad it was helpful! Do subscribe for more insightful content in the future if you haven't :)
very good and informative video
Glad you liked it Ryan!! Do you use any testing tools for gemstones?
how about Lab grown Diamont?
So far so good 👌
Glad you think so! Please do subscribe to our channel to get more updates on our latest videos.
Finaly i understand wath i have i have some small type 2a diamond i need to send lap
Thanks for this video
You are welcome :)
Thank-you very much
You are most welcome! Please do subscribe to our channel to get more updates on our latest videos!
Scratch test is the best, for hardness test.
Thank you for your comment. You are correct as Diamonds are the hardest gem known, but this is best done on rough material as it is destructive testing and can be problematic if not done carefully on finished goods. Best wishes, Tanja
Very Very good Video
Thanks for watching!
I have the presidium type 2 and its difficult to use bc most of the stons that i tested show that are natural I know that are for colorless stones but os not a 100% sure what you have or is necessary to make a pre check with the teste then I use the presidium tipe 2?
Hi Bryan,
I am not sure if I fully understand your question but I will try to answer it and please let me know if I have misunderstood.
Is your tool the presidium duo tester 2 which distinguishes between several colored stones as well as diamonds or is it just a diamond tester?
The only purpose of the diamond tester is to determine whether it is a diamond or not. It is not capable of distinguishing natural versus synthetic diamonds... for this we need more sophisticated equipment. But it is a most useful tool if you are working with colorless materials of which there are so many today that look convincingly like diamond but are not.
If you are working with the gem tester ll which distinguishes between many different types of colored gems as well as diamonds then it is advisable to do further testing and use your tester as a double confirmation. The duo gem tested ll is also not capable of distinguishing between natural versus synthetic material this would be best done using a microscope or today more sophisticated equipment generally found in the labs.
We use the gem duo tester ll in our classes but this is usually after we have used other gemological equipment such as refractometer, polariscope, dichroscope, ect or whichever tool is necessary to eliminate the possibilities because there are so many similar looking minerals available today (approx 4800 species) which is exactly why pre-testing with other tools has to be done. (You will have noticed that the tool offers only the most common and typical options as it would be impossible to have thousands of options on one small tool) At that point when we have a good idea of what the material is and use the gem duo tester ll we will get our confirmation.
I hope this was helpful but please contact me again if I misunderstood your question. 🙏
Thank you - Tanja
I have gemstones want to test rough diamonds is it possible in this Presidium diamond tester and then which model you will prefer for me stone size matter for this to find out Diamond or not please check and let me know
Hi Raj, thank you for you question. Yes, the tester can test on a clean surface of the rough diamond. For small diamond 0.01 ct, we recommend to use Adamas with micro tip
Does it test raw rough diamond?
Hi David, thanks for watching our video. As for your question, yes it does test raw rough diamond!
So why are u not using gemoro
Hi Stephen, We didn't quite get the question. Could you get re-phrase that again please 😀
So basically they’ll never know unless they have some crazy type 1 or 2 tester
Hi Cole, the labs have more sophisticated and expensive equipment which can detect the difference. Yes you are right, without the expensive equipment, we will never know.
REAL!!!
Yes, Arnout it is REAL!!! Thanks for watching our video. We hope you liked it. Please do subscribe to our channel and don't miss out on our latest videos!
La comunidad española es muy grande.. por favor subtitulado en español.. gracias..
¡Buena idea! Gracias por los comentarios, estamos investigando esto.
@@JdmisEduSg tengo algunas piedras en bruto que me gustaría saber que son.. pero estoy en el Amazonas en Venezuela.. quiero saber cuánto vale el testers y si me lo pueden enviar?
Hola@@antonioborojo5227
Los probadores son herramientas útiles, pero no son herramientas independientes. No confiaría en ningún probador (o ninguna prueba) para determinar el material que tiene. Tenemos un curso detallado de identificación de gemas en nuestra escuela, y nuestros estudiantes aprenden que la única forma de identificar correctamente una gema es mediante el proceso de eliminación. Comience con una prueba, esto reducirá sus opciones. Luego haz otra prueba, y otra.... hasta que estés seguro de lo que tienes.
Los probadores de gemas se pueden usar como una de estas pruebas o como una "verificación" para asegurarse de que su proceso gemológico lo haya llevado a la identificación correcta. Los profesionales rara vez los utilizan como el único medio para identificar materiales... y estas probadores nunca le dirán si los materiales son naturales o sintéticos; en el mejor de los casos, "marcarán" una gema para una mayor investigación.
Le recomendaría que se comunique con un laboratorio de gemas local (muchos gemólogos están felices de proporcionar identificaciones verbales a un precio más bajo que un certificado formal) y utilizarán su experiencia y equipo para ayudarlo a llegar a la identificación correcta.
Si desea un probador de gemas, estoy seguro de que presidium puede enviar a Venezuela, y también que sus tiendas locales de joyería tienen su marca o herramientas similares para comprar.
Saludos,
Tanja
@@JdmisEduSg gracias por los consejos.. bien recibidos.. sabe en este país la casi totalidad de las joyerías han quebrado.. y las que quedan sólo venden fantasía y relojitos chinos de dos euros.. las mejorsitas tienen prendas de plata..y muy escasas venden algo de oro.. y equipos de joyerías muy difícil..
@@JdmisEduSg gracias por los consejos.. bien recibidos.. sabe en este país la casi totalidad de las joyerías han quebrado.. y las que quedan sólo venden fantasía y relojitos chinos de dos euros.. las mejorsitas tienen prendas de plata..y muy escasas venden algo de oro.. y equipos de joyerías muy difícil..
what are simulated diamonds mean? How do they test on testers?
cubic zirconia is simulated diamond, it is not a diamond at all.
Hi, @Pavy415! A simulated Diamond is simply any material that looks like a Diamond but has different properties (and there are many!). These look-alike materials can be either natural gems or synthetic (man-made) but have such distinctively different properties that with the right testing equipment is would be easy to distinguish them from Diamond. Diamonds allow heat to pass through faster than most other materials and this is how the first diamond testers were conceived. Using a diamond tester correctly will certainly help to distinguish diamond from most other materials but NOT from a synthetic Diamond. This is because when a man makes Diamond in a laboratory it is being produced with the same properties as the natural it represents so it will give the same results on the diamond testers. Therefore, on modern Diamond testers today only natural and synthetic diamonds will show as Diamonds but all other simulants will be easily detected as NOT diamond.
Oi eu não tem do seu idioma mais se vc entende o meu eu quero com pra um seletor Desi teu pra diamante eu fisio us testi cazeiro numas pedra aqui e deu que som diamante
Olá Jefferson! 😄
Obrigado por entrar em contato. Se você fez alguns testes preliminares em casa que sugerem que você pode ter diamantes, é fundamental obter uma avaliação profissional para confirmar suas descobertas. Embora comprar um testador de diamantes possa ser um bom investimento, se você está apenas procurando testar algumas pedras, você pode considerar a consulta com um laboratório local ou um gemólogo certificado. Profissionais experientes geralmente têm o equipamento necessário e a expertise para realizar testes precisos. Muitos laboratórios locais oferecem serviços de teste verbal sem criar um certificado, mas fornecerão um feedback confiável sobre suas pedras. Desta forma, você pode garantir a autenticidade de suas pedras sem ter que investir em equipamentos especializados
17:40 it will work only if u put in the correct criteria 🥴
Hi Stephen, The Gemoro tester and Ultratester 3+ look really good. I have not had the pleasure to use one yet but I like the look of the tool and also like the option for different languages. My video was produced in collaboration with a Singapore company called Presidium who have produced many good types of gemmological testing equipment over 42 years. I even have one of their first diamond testers which I used for more than 23 years so I know and trust their quality. Re: 17:40 The Diamond screener tool is specifically for checking natural vs synthetic colourless Diamonds. It is only used when the Diamond tester has identified the stone as a Diamond, it will then help to determine if that Diamond is likely to be natural (type 1a) or synthetic. If the result shows blue it is likely to be a type 1a which is natural but the other option (orange light) is likely to be synthetic or an extremely rare Diamond so it is better to send it for further testing. If you put any other gem into this machine it will not give you a meaningful result. I hope this answers your question and thank you for taking the time to watch my video. Wishing you keep safe! Best regards, Tanja
JARROD Rod Joyce from PELICAN La, 🙏👍👀💩👸🙊💫
Hi Joyce, nice to meet you. Hope you enjoy our video!
Pourquoi ça parle toujours en anglais je comprends rien
Salut. Nos cours sont tous enseignés en anglais pour le moment. Mais merci pour vos commentaires, nous envisagerons d'ajouter plus de sous-titres français à l'avenir.
moissanite is not a simulant
Hi Geeno, it actually is. Moissanite has a very similar appearance to real diamonds, the material is made of silicon carbide which is crafted to imitate the same features as natural diamonds.