- Joined
- Jan 27, 2006
- Messages
- 268
Hello. I don't mean to add yet another thread on sapphires, but I am really curious about this.
So I got a pretty little sapphire from Ebay yesterday, from a reputable vendor on this forum. It's not "top" color by any means, but I like it. It's on a lighter side and I would guess medium saturation, and it's pretty well cut and looks bright to me. It's kind of slightly greyish-violetish-blue in daylight and shifts more towards violet in incandescent. It wasn't too expensive, so I am ok with it not being top color (in fact, I wanted a lighter one). It was sold as a heat-only, and from Madagascar.
So here is my question. I was very surprized to see that it has red fluorescence under UV. Not as strong as a Mahenge spinel or a ruby, but still very obvious. Why would a blue sapphire have red fluorescence??? (I hope it does not mean something bad like synthetic or diffused).
Thank you in advance for sharing your knowledge here.
So I got a pretty little sapphire from Ebay yesterday, from a reputable vendor on this forum. It's not "top" color by any means, but I like it. It's on a lighter side and I would guess medium saturation, and it's pretty well cut and looks bright to me. It's kind of slightly greyish-violetish-blue in daylight and shifts more towards violet in incandescent. It wasn't too expensive, so I am ok with it not being top color (in fact, I wanted a lighter one). It was sold as a heat-only, and from Madagascar.
So here is my question. I was very surprized to see that it has red fluorescence under UV. Not as strong as a Mahenge spinel or a ruby, but still very obvious. Why would a blue sapphire have red fluorescence??? (I hope it does not mean something bad like synthetic or diffused).
Thank you in advance for sharing your knowledge here.