DETAILS: No2638 Natural solid boulder opal loose stone 18.98ct set of 4
 Stone  Natural solid boulder opals 
 Carat   18.98ct (4 pieces)
 Dimensions   15.12mm x 9.75mm Thickness 2.83mm (3.33ct) – left side
11.32mm x 9.43mm Thickness 2.94mm (3.49ct)
14.62mm x 10.55mm Thickness 3.65mm (5.52ct)
19.53mm x 12.08mm Thickness 3.14mm (6.64ct)- right side

 (at the longest point)  
 Shape   Freeform 
 Colour   Brown red, navy blue, blue
 Transparency   Opaque 
 Origin   Winton, Queensland, Australia
 Note   *Some of the stones have an undulating surface but smooth polish.
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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