Rare unset Queensland boulder matrix opals (cut and polished matrix opals):

   

Round natural Australian boulder matrix opal bead, unset
from Opalton, Queensland
14 mm in diametre
with a blind hole 1.4 mm in diametre and 12 mm deep
Weight: 18.96 carats
Some blue, green and red colours
Could make a peg and cup opal ring or peg and cup opal pendant
2 Australian boulder matrix opal bead necklaces left for sale on this page

 

Unset Australian natural boulder matrix opal
from Opalton, Queensland
15 mm in diametre
Weight: 6.3 carats
Matrix opal with blue colours
to set in a ring or a pendant

   

Round natural Australian boulder matrix opal bead, unset
from Opalton, Queensland
14 mm in diametre
with a blind hole 1.4 mm in diametre and 10 mm deep
Weight: 20.66 carats
Some blue and green colours
Could make a peg and cup opal ring or peg and cup opal pendant
2 Australian boulder matrix opal bead necklaces left for sale on this page

   

Unset Australian natural boulder matrix opal
from Opalton, Queensland
36 x 22 mm x 10 mm thick
Weight: 61.4 carats
Sparkles of bright various colours not showing on the picture

   

Unset Australian natural boulder matrix opal
from Opalton, Queensland
22 x 17 mm x 7 mm of max. thickness
Weight: 18.5 carats
Matrix opal with flashes of bright blue and green colours to set in a ring or pendant

   

Unset Australian natural boulder matrix opal
from Opalton, Queensland
14 x 14 mm x 7 mm thick
Weight: 10.4 carats
Ring stone with bright various colours

   

Unset Australian natural boulder matrix opal
from Opalton, Queensland
30 mm x 20 mm x 6.8 mm thick
Weight: 38.78 carats
Various colours with red

   

Unset Australian natural boulder matrix opal
from Opalton, Queensland
35.7 x 24 mm x 7.5 mm thick
Weight: 58.6 carats
Various colours with red colours

   

Unset Australian natural boulder matrix opal
from Opalton, Queensland
27 x 16 mm x 7 mm thick
Weight: 30.5 carats
Blue and bright green colours

   

Unset Australian natural boulder matrix opal
from Opalton, Queensland
31 mm x 19 mm x 6 mm thick
Weight: 35 carats
Bright green colours

   

Unset Australian natural boulder matrix opal
from Opalton, Queensland
23 x 16 mm x 4 mm thick
Weight: 14 carats
Matrix opal with bright green colours
The price of this matrix opal is reduced as it has a small, hardly visible natural surface crack on top, but not affecting its solidity This opal is stable and will not crack any further and could be repaired if wanted, before setting into a ring or a pendant

   

Unset Australian natural boulder matrix opal
from Opalton, Queensland
27.7 mm x 11.3 mm x 10 mm thick
Weight: 32.20 carats
Green sparkles of colours

   

Unset Australian natural boulder matrix opal
from Opalton, Queensland
39.7 x 23.5 mm x from 2 to 7.5 mm thick
Weight: 45.55 carats
Various bright colours with red

   

Unset Australian natural boulder matrix opal
from Opalton, Queensland
21 mm x 14 mm x 5.5 mm thick
Weight: 15.52 carats
Green colours

   

Unset Australian natural boulder matrix opal
from Opalton, Queensland
27.7 x 15 mm x 7 mm thick
Weight: 26 carats
Various bright colours with red

   

Unset Australian natural boulder matrix opal
from Winton, Queensland
37 x 15 x 8 mm thick
Weight: 41.50 carats
Some sparkles of bright green and red colours

   

Unset Australian natural boulder matrix opal
from Winton, Queensland
20 x 18 mm x 4 mm thick
Weight: 11.9 carats
Opal matrix full of blue colours

   

Unset Australian natural boulder matrix opal
from Winton, Queensland
41 x 29 x 8 mm thick
Weight: 77 carats
Red sparkles on both sides
( Looks like a worm hole in the center of a galaxy ?)

   

Unset Australian natural boulder matrix opal cabochon
from Opalton, Queensland
22 x 15 mm x 7.6 mm thick
Weight: 24.8 carats
Bright blue and green colours

   

Big unset Australian natural boulder matrix opal
from Winton, Queensland
40 mm x 26 mm x 10 mm thick
Weight: 85.16 carats
Bright blue and green colours

   

Unset Australian natural boulder matrix opal
from Opalton, Queensland
27.6 mm x 18 mm x 7.3 mm thick
Weight: 36.10 carats
Various colours with red

   

Unset Australian natural boulder matrix opal
from Opalton, Queensland
28.8 mm x 23 mm x 8 mm thick
Weight: 36.22 carats
Blue and green sparkles of colours

   

Unset Australian natural boulder matrix opal
from Opalton, Queensland
28 mm x 19.6 mm x 6.4 mm thick
Weight: 29.67 carats
Full of green sparkles of colours

   

Unset Australian natural boulder matrix opal
from Opalton, Queensland
31 mm x 16 mm of max. width x 6 mm thick
Weight: 28.67 carats
Bright green colours with red

 

Big unset Australian natural boulder matrix opal
from Winton, Queensland
44 x 33 x 8 mm thick
Weight: 132 carats
Bright green colours

   

Very big unset Australian natural boulder matrix opal
from Winton, Queensland
57.2 x 36 x 6.3 mm thick
Weight: 147.8 carats
Big opal matrix with sparkles of bright green and red colours

   

Unset Australian natural boulder matrix opal
from Opalton, Queensland
23 mm x 11.5 mm x 5.5 mm thick
Weight: 10.95 carats
Bright blue and green colours

   

Unset Australian natural boulder matrix opal
from Opalton, Queensland
24.5 mm x 12.5 mm x 7 mm thick
Weight: 14.47 carats
Bright electric blue/green colours

   

Unset Australian natural boulder matrix opal
from Opalton, Queensland, Australia
30 mm x 12 mm x 6 mm thick
Weight: 17.20 carats
Full of various bright colours