I am not totally sure what this stone is.  My best guess is Moss Agate.  Framed it quite elaborately...

 

Comes with a 24" faux-copper chain.

 

 

 

Moss Agate (?) Round

SKU: 20041
$50.00Price
  • Tallest & widest dimensions

    2 1/2"x 1 1/4"

  • About the copper

    Antiqued, polished and sealed.  Will not darken further or rub off on skin.  No polishing needed.