Strong blue fluorescence???

posted 3 years ago in Rings
Post # 2
647 posts
Busy bee
  • Wedding: June 2019

Hmm for step cuts especially I think you want to stay away from any fluorescence because it will make the diamond look cloudy due to the long facets. It varies for each stone though so I would try to get a hi def pic of it or see it in person first

Post # 3
1068 posts
Bumble bee
  • Wedding: October 2015

Only 2% of diamonds are affected by cloudiness from flou, but it can make the stones look blueish in the sunlight. Flou can be really nice in low color diamonds and it can help make them appear whiter, also the price on them is lower because ther is a misconception that flou is not good. That said I have actually seen a HUGE diamond affected by the flou haze and it was quite noticeable right from the get go, they appear just slightly out of focus. 



Here is a designer who who has an entire line dedicated to flou diamonds and they are gorgeous so don’t be turned off my strong flou, most of the time you can get amazing diamonds

Post # 4
813 posts
Busy bee
  • Wedding: May 2018

I agree with pp. You have to take a look. Affected diamonds are rare. Also it’s said that it makes diamonds up to H – I think – apear whiter. No difference for higher color stones. 

Don’t be afraid to get it as long as you can take a look and confirm it looks good. That’s all that matters. 

Post # 5
5854 posts
Bee Keeper

I have two stones with faint fluorescece and two stones with strong fluorescence (earring studs). None of them are cloudy. Personally I find fluorescence to be totally cool.

Post # 6
4641 posts
Honey bee

I think seeing a stone in person is very important.  Sometimes moreso important than the specs themselves.  I don’t know if I would have considered my diamond if I hadn’t seen it in person and compared it to other stones.  


Post # 8
412 posts
Helper bee

My stone is a J with medium fluorescence. It mostly looks white but I’ve taken pictures where it looks blue. I think it is neat.

These are the only images I’ve seen blue in. I love that the stone can look so different depending on the lighting.


Post # 9
95 posts
Worker bee
  • Wedding: August 2019 - Santa Barbara, CA

I have a D color pear with strong blue fluorescence.  We specifically picked one with flour.  I don’t see any haziness in mine; in strong direct sunlight you can see it but only in photos. I love it! I haven’t seen it under a black light yet though, I can’t wait!  We didn’t see ours in person, but saw videos and photos of it online.  If it doesn’t affect the stone go for it!

Strong direct sunlight


How it normally looks

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