DETAILS: No2546 Natural solid boulder opal loose stone 7.85ct 
 Stone  Natural solid boulder opals 
 Carat   7.85ct 
 Dimensions   17.96mm x 12.34mm Thickness 3.67mm  (at the longest point)  
 Shape   Freeform 
 Colour   Grey with green, orange, yellow
 Transparency   Opaque 
 Origin   Winton, Queensland, Australia
 Note   *They have a slight undulating surface but smooth polish
*The middle of the dark part in the photos are the shadow of the camera.
Last picture is back of the stones. 
   All photos were taken under natural light.
 Coin show in photo is Australian two-dollar coin.Size 20.50mm diameter.
*Please check the measurements before purchase, the items appear bigger in photos.

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