Unset cut opals from Australia - Page 4 -

         

Very big unset cut boulder matrix opal
57.2 x 36 x 6.3 mm thick
Weight: 147.8 carats
Big opal matrix with some sparkles of bright green and red colours
Origin: Winton, Queensland, Australia
Suitable for a Western style belt buckle

         

Round unset cut boulder opal
31 mm of diameter x 4.5 mm thick
Weight: 41.5 carats
Green colours on both sides of the stone
(Reversible stone)
Origin: Winton, Queensland, Australia

     

Unset cut boulder opal
13.3 x 10 x 3.9 mm thick
Weight: 4 carats
Bright red colours with some green
Origin: Winton, Queensland, Australia

     

Unset cut boulder opal
11 x 8 x 3.5 mm thick
Weight: 3.4 carats
Boulder opal full of red colours
Origin: Winton, Queensland, Australia

       

Unset cut boulder opal
10.8 x 7.8 x 3.3 mm thick
Weight: 2.4 carats
Various colours with bright gold/ orange
Origin: Winton, Queensland, Australia

     

Unset cut crystal opal
17.3 x 9 x 3 mm thick
Weight: 3 carats
Play of various bright colours
Origin: Winton, Queensland, Australia

     

Unset cut boulder opal
27 x 10 x 5 mm thick
Weight: 8.8 carats
Various bright colours with bright red
Origin: Winton, Queensland, Australia

       

Unset cut opal
28 x 19.9 x 4 mm thick
Weight: 17 carats
Play of various colours with rolling red/orange
Origin: Winton, Queensland, Australia

       

Unset cut crystal opal
27 x 11 x 5.3 mm thick
Weight: 11.5 carats
Sparkles of bright green colours
Origin: Winton, Queensland, Australia
The face of this opal is slightly wavy

     

Big unset cut black opal
34.6 x 18.4 x 6 mm thick
Weight: 27 carats
Blue and green colours
Origin: Lightning Ridge, N.S.W., Australia

     

Unset cut bright boulder opal
15.4 x 13 x 3.9 mm thick
Weight: 7.7 carats
Various bright colours
Origin: Winton, Queensland, Australia

             

Unset cut opal
15.7 x 10.4 x 3 mm thick
Weight: 3 carats
Play of bright various colours with green and red
Origin: Lightning Ridge, N.S.W., Australia

     

Unset cut crystal opal
38 x 13.7 x 5.6 mm thick
Weight: 15.5 carats
Bright light green colours
Origin: Winton, Queensland, Australia

       

Unset cut crystal opal
High free form cabochon
23 x 12.4 x 6.2 mm thick
Weight: 10 carats
Play of bright varied colours
Appears mostly bright green or bright pinkish red depending of the light source
Origin: Winton, Queensland, Australia

         

Unset cut crystal opal
High free form cabochon
16.2 x 12.6 x 6.3 mm thick
Weight: 8.3 carats
Bright green colours with some pink colours
Origin: Winton, Queensland, Australia

           

Unset cut opal
17.2 x 8.4 x 5.6 mm thick
Weight: 5.4 carats
Full of various bright colours on both sides
(Reversible stone)
Origin: Lightning Ridge, N.S.W., Australia

       

Unset cut opal
Free form cabochon
23.4 x 13.7 x 5.9 mm thick
Weight: 10.7 carats
Play of bright varied colours with red
Origin: Winton, Queensland, Australia

       

Unset cut black crystal opal
14.6 x 11.7 x 3.6 mm thick
Weight: 3.8 carats
Strong bright colours with rolling bright green and golden orange colours
Origin: Lightning Ridge, N.S.W., Australia

     

Unset cut boulder opal
15.3 x 10.3 x 4.4 mm thick
Weight: 5.9 carats
Bright colours with bright red orange
Origin: Winton, Queensland, Australia
The face of this opal is wavy

           

Unset cut black opal
13.8 x 12 mm
Weight: 4.6 carats
Full of bright electric colours
Origin: Lightning Ridge, N.S.W., Australia

         

Bright unset cut crystal pipe opal
15.8 x 10 x 4.6 mm thick
Weight: 5.75 carats
Very bright colours with red
Origin: Winton, Queensland, Australia

     

Unset cut boulder opal
19.4 x 11.2 x 4.2 mm thick
Weight: 11.6 carats
Origin: Winton, Queensland, Australia
Bright green opal