Rough boulder matrix opals from $18.00 USD to $225.00 USD
These rough boulder matrix opals, are a variety of opal found only in Queensland. They are natural and solid.
Some are entirely rough from the mine, others have been only sawed or roughly preformed to show the colour and reduce their
weight.
The rough ones will show better their colours when wet or after they have been finished.
Most of them have been photographed in water to show their colours.
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Please note:  > 24.4 millimetres (mm) equal  1 inch - 10 millimetres equal 0.39 inch.
> 1 ounce equals 28.34 grams - 100 grams equal 3.5 ounces
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PBM24 -  $60.00 USD  
Parcel of 4 preformed boulder matrix opals
Total weight: 100 carats
Dimensions: From 21mm x 20 mm to 38 mm x 17 mm
Big stones with varied brilliant colours
PBM28 - $23.00 USD   SOLD
Parcel of 5 preformed boulder matrix opals
Total weight : 107 carats
Dimensions: From 20 mm x 18 mm to 25 mm x 19mm
Varied colours
PBM26 - $40.00 USD
Parcel of 6 preformed boulder matrix opals
Total weight: 130 carats
Dimensions: From 22 mm x 15 mm to 34 mm x 15 mm
Varied colours      
PBM4 - 5 preformed boulder matrix opals
PBM 4 - $57 USD    SOLD
Parcel of 5 preformed boulder matrix opals
Total weight: 155 carats
Dimensions: From 34 mm x 12 mm to 35 mm x 22 mm
Big stones with mixed colours including red
PBM3 - 5 preformed boulder matrix opals
PBM3 -  $75.00 USD
Parcel of 5 preformed boulder matrix opals
Total weight 84 carats
Dimensions: From 25 mm x 15 mm to 31 mm x 16 mm
Big stones with mixed colours including red
PBM27 - $19.00 USD   SOLD
Parcel of 4preformed boulder matrix opals
Total weight: 200 carats
Dimensions: From 32 mm x 23 mm to 41 mm x 29 mm
Some varied colours
6  opal matrix PBM26
4  opal matrix PBM27
5  opal matrix PBM28
4  opal matrix PBM24
RMSPL3-matrix split
RMSPL3 - $60.00 USD
Rough Boulder matrix opal split picture stone
(bear head complete with ears and eyes )
Total weight: 55 carats
Dimensions: 20 mm x 18 mm and 25 mm x 18 mm
This split fits perfectly when joined together
Brilliant dark electric colours including red
5 matrix PBM29
PBM29 - $30.00 USD
Parcel of 4 preformed boulder matrix opals
Total weight: 144 carats
Dimensions: From 24 mm x 16mm to 50 mm x 28 mm
2 small and 2 large stones with varied colours      
5 matrix PBM31
5 matrix PBM32
5 matrix PBM33
PBM31 - $34.00 USD   SOLD
Parcel of 6 preformed boulder matrix opals
Total weight: 73 carats
Dimensions: From 15 mm x 11 mm to 28 mm x 11 mm
Varied colours with a little red  
PBM32 - $50.00 USD
Parcel of 5 preformed boulder matrix opals
Total weight: 99 carats
Dimensions: From 20 mm x 12 mm to 31 mm x 19 mm
Varied colours with red   
PBM33 - $50.00 USD
Parcel of 5 preformed boulder matrix opals
Total weight: 83 carats
Dimensions: From 22 mm x 13mm to 31 mm x 12 mm
Varied colours with red   
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Click on each picture to make it  bigger, the opal colours will be more visible
4 rough opal matrix
RM3 - $20.00 USD
Parcel of 4 roughly faced boulder matrix opals
Total weight: 92 grams
Dimensions: From 38 mm x 22 mm to 53 mm x 33 mm
Varied colours      
3 rough opal matrix
RM1 - $40.50 USD   SOLD
Parcel of 3 large roughly faced boulder matrix opals
Total weight: 154 grams
Dimensions: From 56 mm x 39 mm to 58 mm x 54 mm
Varied colours      
3 rough opal matrix
RM5 - $50.00 USD
Parcel of 3 roughly faced boulder matrix opals
Total weight: 100 grams
Dimensions: From 40 mm x 30 mm to 58 mm x 42 mm
Varied colours      
3 rough opal matrix
RM2 - $60.00 USD
Parcel of 3 large roughly faced boulder matrix opals
Total weight: 178 grams
Dimensions: From 48 mm x 38 mm to 81 mm x 41 mm
Varied colours with some red   
4 rough opal matrix
RM4 - $60.00 USD
Parcel of 4 roughly faced boulder matrix opals
Total weight: 178 grams
Dimensions: From 48 mm x 38 mm to 81 mm x 41 mm
Varied colours  
Rough opal matrix RB56 b
Rough matrix opal RB56
RBM56 - $35.00 USD  
Rough boulder opal matrix
Size: 58.23 x 47.30 mm x 15.60 mm thick
Weight: 86 grams.
Sawed piece of boulder opal matrix with small multi colored sparkles.
Photographed in water to show the colors.
Photos show both sides of the stone.
Rough opal matrix RB57 b
Rough matrix opal RB57
RBM57 - $40.00 USD  
Rough boulder opal matrix
Size: 58 x 47.35 mm x 10.12 mm thick
Weight: 78 grams.
Large sawed piece of boulder opal matrix with multi colored sparkles with
some red.
Photographed in water to show the colors.
Photos show both sides of the stone.
Rough matrix opal RB58 b
Rough matrix opal RB58
RBM58 - $50.00 USD  
Rough boulder opal matrix
Size: 85.36 x 70 mm x 10.12 mm thick
Weight: 86 grams.
Large sawed piece of boulder opal matrix with flashes of
various colors.
Photographed in water to show the colors.
Photos show both sides of the stone.
Slice of opal matrix RB59 b
Slice of opal matrix RB59
RBM59 - $65.00 USD  
Rough boulder opal matrix
Size: 155.30 x 91.60 mm x 9.50 mm thick
Weight: 241 grams.
Extra large sawed piece of boulder opal matrix with flashes
of various colors.
Photographed in water to show the colors.
Photos show both sides of the stone.
Slice of opal matrix RB60
Slice of opal matrix RB61 b
Slice of opal matrix RB60 b
RBM60 - $80.00 USD  
Rough boulder opal matrix
Size: 152 x 81 mm x 11.35 mm thick
Weight: 217 grams.
Extra large sawed piece of boulder opal matrix with flashes
of various colors.
Photographed in water to show the colors.
Photos show both sides of the stone.
Slice of opal matrix RB61
RBM61 - $100.00 USD  
Rough boulder opal matrix
Size: 113.55 x 77.17 mm x 9.13 mm thick
Weight: 86 grams.
Large sawed piece of boulder opal matrix with strong electric
green and some blue flashes of colors, lightly sanded.
Photographed in water to show the colors.
Photos show both sides of the stone.
Slice of opal matrix RB62 b
Slice of opal matrix RB62
RBM62 - $120.00 USD  
Rough boulder opal matrix
Size: 143.73 x 86.80 mm x 8.53 mm thick
Weight: 211 grams.
Extra large sawed piece of boulder opal matrix with flashes
of various dark colors.
Photographed in water to show the colors.
Photos show both sides of the stone.
S63 blice of opal matrix RB
Slice of opal matrix RB63
RBM63 - $150.00 USD  
Rough boulder opal matrix
Size: 116.85 x 73.41 mm x 5.42 mm thick
Weight: 98 grams.
Large sawed piece of boulder opal matrix with strong electric
green and some blue flashes of colors, lightly sanded.
Photographed in water to show the colors.
Photos show both sides of the stone.
3 rough matrix opals PBM34
PBM34 - $60.00 USD
Parcel of 3 large preformed boulder matrix opals
Total weight: 31 grams ( 155 carats )
Dimensions: From 31.16 mm x 24.60 mm to 39.63 mm
x 26.65 mm
Big stones with mixed colours including red
3 rough matrix opals PBM35
3 rough matrix opals PBM38
PBM35 - $150.00 USD
Parcel of 3 large preformed boulder matrix opals
Total weight: 13 grams ( 65 carats )
Dimensions: From 18 mm x 11 mm
to 27 mm x 21.32 mm
Bright dark colours with red
PBM38 - $180.00 USD   SOLD
Parcel of 3 large preformed boulder matrix opals
Total weight: 73 grams ( 365 carats )
Dimensions: From 33.54 mm x 33 mm
to 39 mm x 39.73 mm
Big stones with bright sparkles of colours with red
5 rough matrix opals PBM36
4 rough matrix opals PBM37
PBM37 - $200.00 USD
Parcel of 4 large preformed boulder matrix opals
Total weight: 30 grams ( 150 carats )
Dimensions: From 29 mm x 16.25 mm
to 35.38 mm x 25.14 mm
Bright colours with lots of red
PBM36 - $225.00 USD   SOLD
Parcel of 5 large preformed boulder matrix opals
Total weight: 44 grams ( 220 carats )
Dimensions: From 23.88 mm x 19.75 mm
to 13.34 mm x 19.45 mm
Mostly electric green colours