the spinel in your avatar we call it pigeon blood red spinel, which is also a range of colors, the darker ones we call black pigeon blood, and some people call it noble red spinel. The reflected light of this type of spinel has a very rich red, but the body color is very dark. It shows the color of the reflected light when the light hits, and the body color when no light hits, which is why it has great colour when the light hits but dark if no light hits.
In addition, this type of spinel has almost no fluorescence under UV light. Therefore, this type of spinel may have a relatively high iron content.
But there is no official trade name for the color of spinel, although some appraisal agencies give Jedi spinel an official business name, but not all appraisal agencies recognize it. As for others such as pigeon blood red, noble red, etc., don't pay too much attention to these names, for colored gemstones, rich, bright colors are always the best, no matter what it is called.
The images below can demonstrate the effect of this type of spinel.The gemstone circled in blue is the same one pigeon blood red spinel as these three separate shots, showing the different color effects under light hits and no light hits
These are the stones received in the last two months. Among them are Vietnamese pigeon blood rubies and Jedi spinels. These spinels and rubies have been posted before. This time, the photo uses a very unfriendly sidelight for faceted gemstones, so you can see what makes jedi spinel special. Pigeon blood ruby and Jedi spinel can also show the difference in tone
These three are included in the picture: 1、pigeon blood red spinel, 2、GUILD jedi spinel, 3、GUILD jedi spinel real jedi spinel
From the market price point of view, the price of dark red spinel is much lower than that of jedi spinel, and also lower than pink-red spinel, especially in the Asian market. The only advantage of dark red spinel is that it has a relatively strong and pure red tone in places with sufficient light, but the number of pure red dark red spinel is not very large, and most of them still have a rose red or orange tone. As for the contrast between dark red spinel and red garnet, dark spinel does not have much advantage, regardless of hue, refractive index, or rich color, the advantage of spinel is only hardness
@landscape with the GUILD reports, how do you find their grading, is it worth taking into account when looking at spinels online?
I have seen a few Jedi spinels GUILD reports online, some are annotated with the term Vibrant-brilliance and some without. Do you know more about it? Thank you
Whether it is called Noble red Spine or not depends on whether the reflected light is positive red.usually with positive red reflected light with no UV fluorescence or very weak UV fluorescence. usually reflects light with pink tones, rose tones, or other tones if strong UV fluorescence. It may not be obvious on its own, but the rose-red hue is easy to see in contrast, especially in natural light.
I posted a comparison photo of two dark red spinels, the one with UV fluorescence has a rose-red tint, and the one without UV fluorescence is true red. I'm here at night, so I can't shoot natural light. I'll make up for the comparison of natural light during the day tomorrow.
As I mentioned above, there is no need to care about the business name, because they are not official, we just look for the color we like, some people like the dark red spinel that is true red, they think that true red is Noble red Spine, but some people don't care about the color, as long as the color is strong enough, it can also be called Noble red Spine
Really love the one on the right
Thank you very much for posting this.Whether it is called Noble red Spine or not depends on whether the reflected light is positive red.usually with positive red reflected light with no UV fluorescence or very weak UV fluorescence. usually reflects light with pink tones, rose tones, or other tones if strong UV fluorescence. It may not be obvious on its own, but the rose-red hue is easy to see in contrast, especially in natural light.
I posted a comparison photo of two dark red spinels, the one with UV fluorescence has a rose-red tint, and the one without UV fluorescence is true red. I'm here at night, so I can't shoot natural light. I'll make up for the comparison of natural light during the day tomorrow.
As I mentioned above, there is no need to care about the business name, because they are not official, we just look for the color we like, some people like the dark red spinel that is true red, they think that true red is Noble red Spine, but some people don't care about the color, as long as the color is strong enough, it can also be called Noble red Spine
Thank you very much for this.
I will attach a photo of the fluorescence I get. I apologise for putting it on your thread but I'd really like to know more.
This is my stone next to a Madagascan Sapphire, my UV lamp is cheapo and weak but the stone look quite bright.
What I mean is that the true red spinel without other tones is more difficult to find. The one on the left is like this. In fact, it has nothing to do with UV fluorescence, but if the spinel has UV fluorescence, it will hardly be true red. A dark red spinel, if it doesn't have a true red hue, I don't think there is any particular concern, too many bright spinels can crush this dark red spinel, except for true red, bright Spinel will not have a positive red hue
I looked at the picture of your thread, and I can confirm that it is not a true red, it is a normal dark red spinel with a distinct rose tone, because it can be seen without contrast. But the price of 1+ct170usd is also very reasonable. Of course it can also be called pigeon blood red spinel
The standard of jedi spinel formulated by AIGS is very good. Although their own certificates may not strictly follow their own standards, we can choose jedi spinel strictly according to that standard.
No, only for dark red spinel.Because UV fluorescence has no use for dark red spinel, if dark red spinel is not true red, there is no advantage compared to bright red spinel.
the spinel in your avatar we call it pigeon blood red spinel, which is also a range of colors, the darker ones we call black pigeon blood, and some people call it noble red spinel. The reflected light of this type of spinel has a very rich red, but the body color is very dark. It shows the color of the reflected light when the light hits, and the body color when no light hits, which is why it has great colour when the light hits but dark if no light hits.
In addition, this type of spinel has almost no fluorescence under UV light. Therefore, this type of spinel may have a relatively high iron content.
But there is no official trade name for the color of spinel, although some appraisal agencies give Jedi spinel an official business name, but not all appraisal agencies recognize it. As for others such as pigeon blood red, noble red, etc., don't pay too much attention to these names, for colored gemstones, rich, bright colors are always the best, no matter what it is called.
The images below can demonstrate the effect of this type of spinel.The gemstone circled in blue is the same one pigeon blood red spinel as these three separate shots, showing the different color effects under light hits and no light hits
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