Where to find out more about turquoise?

[newon3]

Currently in the middle of moving, and found some turquoise I've long forgotten about, and had for 20 years or so..

Anyone know a good source to find out quality and value?

 

[LilAlex]

@stracci2000 here is very knowledgeable -- hope she will be along shortly...

 

[newon3]

 

[stracci2000]

Where did you get them?
I think they are interesting as specimens.
I'm thinking Arizona turquoise, based on the color. Perhaps Sleeping Beauty, but I am not an expert.
Theses could even be chrysocolla or dyed howlite instead of turquoise.
Calling @Autumn in New England

 

[newon3]

⁹

?

 

[newon3]

I believe Arizona ((or close to) based on the other rocks/minerals they were with)

Is there a way to find out?
Like I said, I got these probably 20 years ago in a lot..

 

[newon3]

These were the only things labeled in the box..

 

[stracci2000]

The more I look at them, the more suspicious they look to me. I think that they are not natural turquoise.
The matrix should be tan, brownish or black. These stones have a grayish matrix which seems odd to me.

 

[newon3]

K. Thanks

 

[LemonMoonLex]

The more I look at them, the more suspicious they look to me. I think that they are not natural turquoise.
The matrix should be tan, brownish or black. These stones have a grayish matrix which seems odd to me.

My immediate gut reaction was howlite, but It's difficult to tell.

 

[Bron357]

You could check their specific gravity?

 

[headlight]

My immediate gut reaction was howlite, but It's difficult to tell.

Howlite came to my mind, as well. Time to bring out the refractometer!