Featured Help with seal carving material.

Hi all,
I purchased this little seal carving the other day at a little antique store in Rio Linda California.
I have found little about the carver Aaron Gologergen. I know he lived in Savoonga Alaska on St Lawrence Island and is 67 years old. He is Siberian Yupik I believe.
Also apparently this was sold at a mount Edgecumbe crafts store on Kruzof island.
I really would like to know what the material is that the carving is made of.
It is hard to explain. grain, swirls, reflective looks like metallic or pearl?
Any information is greatly appreciated.
Mikey

 

Shine a light through it and see what it looks like.May be a type of rutilated quartz..... https://www.geologyin.com/2024/01/rutile-quartz-types-formation-colors.html

 

Could it be petrified wood?

 

I was thinking maybe petrified wood. I shined a light on it and is not transparent at all. Thanks for helping.
Mikey