shape
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Jedi spinel

Pomelo

Shiny_Rock
Joined
Oct 20, 2015
Messages
158
@landscape just wanted to say thank you sharing your specimens and knowledge with us. I’m fairly new to the CS forum (been lurking over on diamonds for years!) and have found your threads and posts incredibly helpful and informative.

I have found it difficult to “cross over” into the CS word precisely because it’s so hard to know what to look for - colour, glow etc etc, but your threads are helping me amass knowledge little by little :D
 

landscape

Shiny_Rock
Joined
Dec 22, 2020
Messages
296
@landscape just wanted to say thank you sharing your specimens and knowledge with us. I’m fairly new to the CS forum (been lurking over on diamonds for years!) and have found your threads and posts incredibly helpful and informative.

I have found it difficult to “cross over” into the CS word precisely because it’s so hard to know what to look for - colour, glow etc etc, but your threads are helping me amass knowledge little by little :D

I also get a lot of info here and glad to helpful
 

Nick_G

Shiny_Rock
Joined
Sep 7, 2018
Messages
274
Haha, yes, what is pink sapphire and pinkish red ruby is quite subjective and a matter of debate I think.

Thanks for the pics, no it doesn't have to be a colour that is very common, it's more that I've often heard people say that rubies and spinels can be very similar in appearance but haven't seen enough examples side by side where they really resemble each other closely.

Also rubies and spinels to me seem to have different 'strengths' - rubies more glowy, stronger flourescence under the sun, more intense red?, whereas spinels more sparkly, more interesting ambiguous colours, can perform really well in low or dark light etc., though again, haven't seen enough similar colour rubies and spinels to really compare like for like.

For some time now, I've been having a debate inside my head as to whether I prefer rubies over spinels or vice versa. Despite the pointless and unnecessary nature of this (particularly as nobody is asking me this question and I'm just asking myself), it's something I can't make up my mind over, and I'm partly interested in seeing similar colour and quality stones side by side for that reason (most people don't have collections like yours to be able to do that, including many vendors).

Actually this has had me wondering for a while whether the most neon fluorescent 'Jedi' spinels are actually superior in colour saturation and fluorescence than any ruby. I'm just going on pictures online. I've not been able to compare lots of different stones like that in person.

So which has the best neon intensity?

PS some absolutely stunning stones featured in this thread from @landscape
 

landscape

Shiny_Rock
Joined
Dec 22, 2020
Messages
296
Actually this has had me wondering for a while whether the most neon fluorescent 'Jedi' spinels are actually superior in colour saturation and fluorescence than any ruby. I'm just going on pictures online. I've not been able to compare lots of different stones like that in person.

So which has the best neon intensity?

PS some absolutely stunning stones featured in this thread from @landscape

The color, tone and saturation of the reflected light from the jedi spinel pavilion is almost the same as the color of the Jedi spinel body . The body saturation of other gemstones is generally darker than the reflected light (including ruby and common red spinel).
Therefore, a jedi spinel with superior saturation colour reflected light usually also has a body color of superior saturation,
so the overall effect of jedi spinel is also superior in colour saturation (we usually observe the color of faceted gemstones = pavilion surface reflected light + body color)
DSC_7600a.jpg DSC_7599.jpg DSC_7606a.jpg DSC_7600.jpg

DSC_7599.jpg DSC_7599a.jpg

other gemstones reflected light with superior in colour saturation usually has a darker body color (superior in colour saturation reflected light + dark body color),

O1CN01l8vAUV1ioj8mM8G4b_!!188264460.jpg O1CN01FCnnK41ioj8pSaXSO_!!188264460.jpg DSC_7637.jpg

or if the body color is superior in colour saturation, but usually the reflected light color is very light
DSC_6161.jpg DSC_6177.jpg



So yes the most neon fluorescent 'Jedi' spinels are superior in colour saturation and fluorescence than any ruby
捕获 拷贝.jpg
 
Last edited:

Nick_G

Shiny_Rock
Joined
Sep 7, 2018
Messages
274
The color, tone and saturation of the reflected light from the jedi spinel pavilion is almost the same as the color of the Jedi spinel body . The body saturation of other gemstones is generally darker than the reflected light (including ruby and common red spinel).
Therefore, a jedi spinel with superior saturation colour reflected light usually also has a body color of superior saturation,
so the overall effect of jedi spinel is also superior in colour saturation (we usually observe the color of faceted gemstones = pavilion surface reflected light + body color)
DSC_7600a.jpg DSC_7599.jpg DSC_7606a.jpg DSC_7600.jpg

DSC_7599.jpg DSC_7599a.jpg

other gemstones reflected light with superior in colour saturation usually has a darker body color (superior in colour saturation reflected light + dark body color),

O1CN01l8vAUV1ioj8mM8G4b_!!188264460.jpg O1CN01FCnnK41ioj8pSaXSO_!!188264460.jpg DSC_7637.jpg

or if the body color is superior in colour saturation, but usually the reflected light color is very light
DSC_6161.jpg DSC_6177.jpg



So yes the most neon fluorescent 'Jedi' spinels are superior in colour saturation and fluorescence than any ruby
捕获 拷贝.jpg

Wow. Thanks for that! This confirms my suspicions.

It seems to be similar with the top quality vivid neon blue cobalt spinels from Vietnam - they look more intense than any sapphire. I do wonder if in future top spinels are going to increase in value to the point that they overtake the corundum gems.
 

landscape

Shiny_Rock
Joined
Dec 22, 2020
Messages
296
Wow. Thanks for that! This confirms my suspicions.

It seems to be similar with the top quality vivid neon blue cobalt spinels from Vietnam - they look more intense than any sapphire. I do wonder if in future top spinels are going to increase in value to the point that they overtake the corundum gems.

Yes neon blue cobalt spinels from Vietnam have the same characteristics.

DSC_9717.jpg DSC_9720.jpg DSC_9745.jpg DSC_9745b.jpg
Jedi spinel is already more expensive than regular-quality rubies, but still far from the top-quality pigeon blood rubies.
I think the top pigeon blood ruby is unsurpassed by spinel, because the number of people who like ruby exceeds the number of people who like spinel. Although the number of spinel is less than ruby, the demand for ruby is far greater than that of spinel.

Unless there is a big capital operation to make spinel as widely known as ruby, if the demand for spinel and ruby is the same, the price of jedi spinel will exceed the price of pigeon blood ruby of the same quality
 

JewelledEscalators

Brilliant_Rock
Joined
Mar 30, 2019
Messages
749
Actually this has had me wondering for a while whether the most neon fluorescent 'Jedi' spinels are actually superior in colour saturation and fluorescence than any ruby. I'm just going on pictures online. I've not been able to compare lots of different stones like that in person.

So which has the best neon intensity?

PS some absolutely stunning stones featured in this thread from @landscape

I wonder though if red spinels have as strong a red flourescence as some rubies in the sun, and if red spinels can match rubies in colour when it comes to bluish red (as in purplish red) rubies. Most red spinels seem to tend towards more orangeish red (though nothing is wrong with that) rather than purplish red.
 

Nick_G

Shiny_Rock
Joined
Sep 7, 2018
Messages
274
I wonder though if red spinels have as strong a red flourescence as some rubies in the sun, and if red spinels can match rubies in colour when it comes to bluish red (as in purplish red) rubies. Most red spinels seem to tend towards more orangeish red (though nothing is wrong with that) rather than purplish red.

It would appear that the top 'Jedi' spinels from Myanmar are indeed as fluorescent as the best rubies, maybe even more so. Spinel also seems to occur in purer reds too without the blue or yellow modifiers. Being singly refractive helps in that regard too as you see the same colour in all directions.

Some amazing stones are featured on this video from Madly Gems, especially the one that first appears just over 9 seconds in:


What an amazing colour and clarity! That together with the large size suggests Mahenge origin.
 

JewelledEscalators

Brilliant_Rock
Joined
Mar 30, 2019
Messages
749
It would appear that the top 'Jedi' spinels from Myanmar are indeed as fluorescent as the best rubies, maybe even more so. Spinel also seems to occur in purer reds too without the blue or yellow modifiers. Being singly refractive helps in that regard too as you see the same colour in all directions.

I'd still like to see a comparision of similar colour red rubies and spinels.
 

airplay355

Shiny_Rock
Joined
Oct 23, 2012
Messages
330
Amazing that you’re able to source these. I especially love the one from post #55. Please keep posting more, they’re beautiful!

You don’t sell these do you? You’re just collecting for personal interests?
 
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