Polished Australian opal specimens, direct from the mines in Australia:

Polished opal specimen
50 x 30 mm x 8 mm thick
Weight: 19 grams
Bright small electric green opals in the mother rock

2 Polished opal specimens
37 x 20 mm  x 14 mm of maximum thickness

and 37 x 25 mm x 15 mm of maximum thickness
Weight: 23 grams & 16 grams
Small opals with bright gem colours including red

in the mother rock

Polished opal specimen
50 x 45 mm x 13 mm of maximum thickness
Weight: 35 grams
Bright electric green opals in the mother rock

Polished opal specimen
35 x 30 mm x 10 mm of maximum thickness
Weight: 16 grams
Bright electric green and red pipe opals in the mother rock

Polished boulder opal specimen
58 x 59 mm x 20 mm of maximum thickness
Weight: 101 grams
Sparkles of bright electric blue, purple and green colours

Polished boulder opal specimen
62 mm wide x 17 mm of maximum thickness

x 34 mm high
Weight: 46 grams
Thin veins of bright electric green colour

Polished opal specimen
55 mm wide x 13 mm of maximum thickness

x 34 mm high
Weight: 30 grams
Bright electric green and red crystal opals

in the mother rock

Polished boulder opal specimen
52 x 38 mm x 38 mm tall

Weight: 115 grams
Green colours on one side

and various colours with red on the other side

Polished boulder opal matrix specimen
74 x 33 mm x 12 mm of maximum thickness
Weight: 40 grams
Only the front and back are polished
This odd shaped specimen
has brilliant colours with red

Polished boulder opal specimen
47 mm wide x 27 mm of maximum thickness

x 49 mm tall
Weight: 79 grams
Blue opal with some green colour

Polished boulder opal specimen
45 x 40 mm x 17 mm of maximum thickness
Weight: 72 grams

Blue & bright green colours
The right hand side has not been polished to create a contrast

Polished boulder opal specimen
45 mm wide x 27 mm of maximum thickness

x 55 mm tall

Weight: 100 grams

Thin veins of opal with small
sparkles of dark bright colours

Polished boulder opal specimen
30 mm wide x 30 mm tick x 52 mm high
Weight: 68 grams
Thin veins of opal with brilliant green colours

Polished boulder opal specimen
65 mm wide x 19 mm of maximum thickness

x 43 mm high
Weight: 91 grams

Polished boulder opal specimen
50 mm wide x 35 mm of maximum thickness

x 50 mm tall
Weight: 110 grams
Bright green colours and sparkles of red

Polished boulder opal specimen
73 mm wide x 23 mm thick

x 53 mm high
Weight: 153 grams
Veins of bright gem colours all around

Polished boulder opal specimen
68 mm long x 37 mm wide

x 25 mm of maximum thickness
Weight: 112grams
Bright green and red colours

Polished boulder opal specimen
36 mm long x 33 mm wide x 29 mm high
Weight: 60 grams
Bright mixed gem colours

Polished boulder opal specimen
31 mm wide x 19 mm thick x 46 mm high
Weight: 67 grams
Play of various colours

Polished boulder opal matrix specimen
58 mm wide x 42 mm high x 12 mm thick
Weight: 53 grams
Multicolored sparkles including red

Polished boulder opal specimen
63 mm wide x 31 mm high x 12 mm thick
Weight: 36 grams
Variety of colours, some brilliant

Polished boulder opal matrix specimen
62 mm long x 50 mm of maximum width

x 29 mm of maximum thickness
Weight: 85 grams
Play of bright colours, with red and red orange
Only the opal face is polished

Polished boulder opal specimen
72 mm wide x 12 mm of maximum thickness

x 37 mm high
Weight: 40 grams
Bright colours with flashes of red

Polished boulder opal split specimen (2 pieces )
1/ 55  x 60 mm x 14 to 24 mm thick -- 2/ 50 x 62  mm x 25 to 40 mm thick
Total Weight: 390 grams
Bars of bright colours
The 2 faces of opal fit together

Polished boulder opal split specimen (2 pieces )
1/ 78  x73 mm x 25 to 38 mm thick -- 2/ 77 x 73  mm x 17 to 30 mm thick
Total Weight: 890 grams
Blue and purple, and some bright green sparkles of colours
The 2 faces of opal fit together

Polished boulder opal specimen with 2 faces of opal
110 x 53 mm
Weight: 193 grams
Various colours with some brilliant

Only the face is polished

Polished boulder opal specimen
67 x 45 mm x 29 mm of maximum thickness
Weight: 115 grams
Mostly green opal
Only the face is polished

The opal runs right through underneath the ironstone in the center

The center could be removed entirely to reveal all of the opal

or only partly removed combined with some carving

and then the thickness could be reduced

to make a very original piece of jewellery

Polished opalised wood specimen
with its petrified bark on the back
82  x 82 x 19 mm of maximum thickness

Weight: 200 grams
Sparkling electric green colours with some blue
The fossilised bark on the back is rough
Very rare

Polished opalised wood specimen

Both ends are highly polished;

the petrified bark around is in its rough natural state
94.40  x 70 x 35 mm thick
Weight: 350 grams
Opal matrix, full of pin fire multicolored opal, with lots of red on one end,
and quartz on the other end with some opal with  bright varied colours.
Very rare

Polished boulder opal specimen
58 x 50 x 35 mm wide
Weight: 133 grams
Brilliant gem colours .
Originally, this boulder opal was surrounding the specimen PBS59

Polished boulder opal specimen
45 x 35 x 15 to 25 mm high
Weight: 59 grams
Brilliant gem colours .
Originally, this boulder opal was in the center of the specimen PBS45 above

The beige potch ( opal without fire ) could be carved

and the whole stone could be reduced in thickness to produce a stunning jewellery item