Gem-A Live: Lead Glass Filled Rubies and Sapphires

Gem-A guest lecturer Julia Griffith FGA DGA, tells us more about the most prevalent treatment of corundum: lead glass filling.
This lecture goes into details on:
- What treatments are
- A brief history of glass filling
- Treatment method
- Treatment effect
- Identification
- Co-Lead glass-filled sapphires
- Testing
- Durability
This webinar was created as part of a weekly series of webinars known as Gem-A Live.
This session was brought to you in association with jewelleryadvisor.com.

[@michelemurphy3541]

This is so fascinating.
Honestly, I am the weirdo who loves the inclusions and the stones with matrixes…on one of the heat,ear glass slumped rubies, I would have definitely preferred the ruby with the white fracture lines~obviously I would want the stone stabilized but as far as look goes, I prefer the look of the clouded compared to the treated clear red.
This is a wonderful way to learn about these treatments…I have been making jewelry for a couple years *wiring but still, putting stones together and I have wondered for several years about how the stones come to be~I realized there were processes to stabilize but did not realize the type you feature on this video.
Thank you so much!!
I am now wanting to become GIA certified because of videos like this! Very very interesting!

[@abseiduk]

Your presentation is absolutely great, very clear and easy to understand, thank you.

[@Shiiiveeers]

i am not a jeweller nor interested in buying precious gemstones but this is quite relaxing to learn about! 💎

[@crystalsoftheworld9009]

Thank you for sharing so valuable information. Now the only thing is to remember it all

[@ronniebauer1922]

This talk is very well presented. More talks Julia

[@akkakhan1]

big Thanks GemA & Ms Griffith for the beautiful lecture.

[@istitutodigemmologiagenova1976]

Excellent lesson

[@macdanmaal2631]

Thank you for sharing for classification

[@dulcefmattos]

Julia you are amazing. If my significant other ever left me for you, they'd be right. Thanks for explaining with such love!

[@veresannamaria4584]

Great lecture, very educative

[@TheHasan0167]

You are amazing. This video is so informative. Thanks a lot. I have become a fan.

[@clo964]

Excellent ! Please more !

[@rhondajones1313]

Julia, I am jealous. My husband just simply loves everything about you from your hair and voice to your knowledge about this stuff.

[@3lostblonds]

Thank you for the corundum learning lecture, I sat through it all, and enjoy learning more about said stones. Tricky little pieces of red and blue. Happy I am not a buyer overseas! Nice session!!

[@altafkhan3701]

Superb information thanks for sharing

[@rtg1960]

Incredibly helpful. Thank you!

[@GemAOfficialChannel]

Glad it was helpful!

[@chrisman714368]

Thanks for the information 👍 😀

[@tejaswinisoni7434]

Incredible with precise content. Thanks!

[@user-hw2ph2mk9n]

كان شرحا را ئع.وعميق خاصتا المتعلق بحجر كشمير

[@jacqiesmith4364]

Great job

[@rebeccagautier]

very good ,.thank you

[@ferrisbeuller8980]

Marvelous.

[@nilntha]

Thanks Madam ❤️❤️❤️💐💐💐 Am from sri lanka still am leaning abut Gems

[@kilojean9553]

thank you

[@TheAlapghia]

This is an extensive knowledge interestingly presented by Julia. Worth watching. Request you to share and spread knowledge of various stone same like this.
Thanks

[@deebagemsminerals3357]

great video

[@deebagemsminerals3357]

Thank you so much wish you best of luck waiting for more exciting things to come

[@aneesahmed6581]

Good Lesson Thank you madem

[@rhondajones1313]

Thank you for your lecture on this subject. I would like to be able to do this at home. lol

[@State_of_palestine_2025]

Excellent explanation

[@agustosicnao9507]

Very interesting information.thank much

[@abjim1170]

Julia , thanks

[@AAGJTOP]

Many thanks for sharing. Is gas bubbles are compulsory in Glass fill rubies.

[@TheGemAcademy]

No - but it is a common feature. Colour flashes are always present in these filled stones - seen edge on to the treated fracture

[@lightgolden5337]

Do you have any of the gemstones yourself? Did you buy any?

[@inokaswarnamali6497]

Great..

[@paulkeilman9481]

I have a stone that rings with a tester can't tell it's a very clean rack.

[@lukaszahradnicek7518]

nice!

[@Sakaha_mandir]

Nice

[@neelandrennie8791]

I free dive for treasures and I found a rose gold ruby ring and to clean it I put it in muratic acid mix with a little water and the ruby didn't get damaged oh and the said ruby is over 3ct.
So my question is that if it was a lead filled glass ruby would the acid bring about a change?

[@junetn9855]

Julia lovely Lady

[@leeloosaasindustries2295]

11:28 are shining rough stones a Sign of lead Glass Treatment?

[@diogenesrodrigo4858]

Santo André, 9 de fevereiro de 2022.
🌌🌎💎

[@sarojkumarsahu5566]

❤👍

[@bonnieabrs1003]

I have a ruby that had some type of treatment. I didn’t know & cleaned the piece. It’s lighter, not shiny.
It is faceted. How can I find out what type of treatment it had & can that process be repeated to restore it?

[@searchtv5878]

I have 10kg of corundom but not transparent. Pls find me some one to buy me.

[@alaasu6485]

Does it glow under UV? Led glass filled ruby?

[@VIRJINALI]

Which acid is used for acid bath?

[@Sakaha_mandir]

Fast day your video see ma'am

[@tashitobgyel9596]

l have several rough diamond,
can you help me to identify. l shall send picture.

[@gsscodf330]

Adults only on my accounts 18 years old and older

[@ibrahimmunir1624]

Good afternoon can you help me miss Julia

[@florayu5299]

It's really useful, thank you for sharing miss Julia!

[@gemma9687]

Is lead glass filling a reversible treatment ? It is not mentioned during the webinar. Thank you

[@flyinglawnmower7457]

What do you think? 😂

[@吳崇剛]

Excellent lesson.

[@GemAOfficialChannel]

Thanks! 😃