How To Identify a Gemstone using a refractometer

[@cynthiafernando7584]

Explained very well, thanks David

[@dfhomsydiamonds]

Thank you! I'm happy to hear you enjoyed it.

[@CarolynMcPherson-r3z]

Fascinating! Thanks for teaching us about this.

[@dfhomsydiamonds]

You’re very welcome. I remember when I was first learning how to use the refractometer. It was challenging to see the cut off line. Happy to help!

[@KushansanjayaGem]

Thanks 🎉❤

[@dfhomsydiamonds]

Thank you for watching!

[@kwokmingng4548]

thank you for the video

[@dfhomsydiamonds]

You’re very welcome! I love helping people.

[@lasantha.rathnayaka]

Wow i also will buy one thanks for the video 😊❤❤❤❤❤

[@dfhomsydiamonds]

My pleasure 😊. If you need any tips and tricks for the refractometer let me know!

[@oviyaktm6531]

excellent video thanks ❤

[@dfhomsydiamonds]

Glad you liked it! Thank you for watching!

[@healthandhappy8253]

Veri nice veri nice information

[@dfhomsydiamonds]

Thank you for watching!

[@lasantha.rathnayaka]

Thanks sir i will buy this 😊❤

[@dfhomsydiamonds]

So glad to hear this video helped. I included the link in the description for you. Enjoy gem identification!

[@Kim-cq5gk]

Can you use it with set stones or only loose ?

[@dfhomsydiamonds]

Yes, you can use this refractometer with set gemstones.

[@CeylonSapphires-f5f]

Anyone need to buy Ceylon Sapphiers

[@sonuverma2796]

Can you teach me colour inhance process for blue sapphire and yellow sapphire

[@dfhomsydiamonds]

Thank you so much for your interest in my videos! I really appreciate it. I will make a note for my next couple videos to include color enhancement and what to look for. That's a great idea! Thank you @sonuverma2796

[@Bruno-lw2wh]

What would be the reading please for genuine Ruby or Sapphires?

[@dfhomsydiamonds]

Thank you for asking! The Refractive Index of Corundum which includes ruby's and sapphire's a variety of is 1.762 to 1.77.

[@AijinDomme]

Without that thing , what other test u can destenguish either it is aquamarine or topaz?

[@dfhomsydiamonds]

That's a great question, and with out gemological testing it's very tough! Another gemological tool you can use is the polariscope to figure out the optic figure of the gemstone. Topaz is Biaxial and Aquamarine/Beryl is Uniaxial. Without gemological testing, you can try weighing the gemstones, however it's not a sure fire way of knowing. Topaz Specific gravity is 3.5 to 3.57 and Aquamarine is2.67 to 2.84.

[@Diamondhunter555]

Very nice ❤❤

[@dfhomsydiamonds]

Many many thanks

[@joelsamson5687]

Do a polished carbonado black diamond has a refraction?

[@dfhomsydiamonds]

Unfortunately, diamonds cannot be tested on the refractometer. They are OTL (over the limit) The limit is 1.81, and diamond RI's are about 2.42.

[@joelsamson5687]

@@dfhomsydiamonds what other test can be done to get the refraction of a diamond? Thanks 😊

[@atifmehmoodkhan7056]

❤

[@dfhomsydiamonds]

Thank you! I'm happy to hear you love the video.

[@KushansanjayaGem]

❤

[@dfhomsydiamonds]

Thank you!

[@GPCTM]

says "solution" as if costs nothing. It's expensive as hell.

[@dfhomsydiamonds]

Yeah, Unfortunately it's super expensive. Gemological equipment can get expensive. I did find a place that sells it for a little less though! Thank you so much for watching my video. www.aajewelry.com/ri-liquid.html

[@TheMinerEngineer]

What liquid is used, and is it replaceable or substituted?

[@dfhomsydiamonds]

Hello @TheMinerEangineer as far as I know you can only use Refractive Index (RI) liquid on the refractometer. You may purchase both through GIA, or just the RI liquid through a jewelry supply company. Below are the links! Let me know if you have any questions. store.gia.edu/collections/gem-identification/products/duplex-ii-refractometer-includes-polarizing-filter-ri-liquid www.aajewelry.com/ri-liquid.html

[@aakarshagemhouse3696]

nice

[@dfhomsydiamonds]

Thanks!

[@dargaard3339]

can it identify raw sapphire stones?

[@dfhomsydiamonds]

Great question, thank you for asking! The refractometer is best used on finished and polished gemstones. The surface of a rough gemstone will make it very hard to receive an accurate reading. It's doable, but not recommended and doesn't provided great results. Along with the fact that it will scratching your hemicylinder really badly (not recommended).

[@MileBTestLabElectronics]

Not solution .. it refractive index oil. 1.81

[@dfhomsydiamonds]

Very true! Thank you, yes it’s not a solution it’s refractive index oil.

[@IbrahimMunir-yd5tk]

Can you tell me. About ruby endex

[@dfhomsydiamonds]

Hello, Thank you for watching! The refractive index of the species natural corundum (which ruby is a variety of the species corundum) is 1.762 to 1.77.