Is this blue topaz or aquamarine?

OMG! Just this week, my family has made me realize that I can't properly see turquoise and light blues anymore... things I strongly believe are turquoise turn out to be blue...so before I list this incorrectly, what color is this? No one is here to ask. THANKS!!

 

I don't know if this is totally correct or will help but here it is anyway.

http://www.gia.edu/aquamarine-quality-factor

Color on a monitor can vary so much and the lighting in a photo can change the color one sees. I see a lot of red reflection/light in your photo on my computer and blue stones.

On this youtube video the amazing color change of her hair is caused by different types of light bulbs.

 

Oh my gosh that video is crazy! Thanks so much SIS!
Well, good news, my old man and a friend of his just stopped by, and they both think it is blue topaz.....I'm so glad I waited because I almost listed it as aquamarine I don't know what's wrong with me.....
Thanks again

 

Oh you mentioned seeing red reflection in my photos.....I was wearing a hot pink robe when taking the pics, LOL! Oooops

 

I know, been there! I was helping with collection photos (as in just being a helper) at a historic site. One of the things was always to wear black but I forget all the time.

 

There are a lot of stones that can be blue. Best bet - take it to a gemologist.

 

My first reaction would be blue topaz plus red shirt reflection, but it would be a good idea to get a second opinion locally. As someone else said, lots of stones can be blue. A heat-treated aquamarine can be blue too; for some reason these days they don't want the green cast.