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Boulder Opals for Sale
Boulder opal forms in seams through Queensland ironstone, and is cut with its host rock as a naturally dark backing — so its colour can rival black opal while every stone keeps a free, organic shape that no two pieces share.
We source boulder opal first-hand through the trade networks our family has built since 1956, and grade it with the same body-tone and brightness system as our Lightning Ridge stones. See the opal types guide for how boulder compares.
44 stones live in this category right now.
#288138 · BOULDER OPAL
81.55 ct
AUD 72,000
81.55 ct
AUD 72,000
#230717 · BOULDER OPAL
41.80 ct
AUD 40,000
41.80 ct
AUD 40,000
#288115 · BOULDER OPAL
59.64 ct
AUD 40,000
59.64 ct
AUD 40,000
#251308 · BOULDER OPAL
16.02 ct
AUD 28,000
16.02 ct
AUD 28,000
#230721 · BOULDER OPAL
18.87 ct
AUD 11,000
18.87 ct
AUD 11,000
#252812 · BOULDER OPAL
10.40 ct
AUD 5,200
10.40 ct
AUD 5,200
#252395 · BOULDER OPAL
13.96 ct (pair)
AUD 4,500
13.96 ct (pair)
AUD 4,500
#253101 · BOULDER OPAL
43.82 ct
AUD 2,000
43.82 ct
AUD 2,000
#288170 · BOULDER OPAL
3.97 ct
AUD 1,400
3.97 ct
AUD 1,400
#230785 · BOULDER OPAL
8.90 ct (pair)
AUD 1,250
8.90 ct (pair)
AUD 1,250
#253024 · BOULDER OPAL
2.90 ct (pair)
AUD 1,100
2.90 ct (pair)
AUD 1,100
#252597 · BOULDER OPAL
19.04 ct
AUD 1,000
19.04 ct
AUD 1,000
#251322 · BOULDER OPAL
5.17 ct
AUD 1,000
5.17 ct
AUD 1,000
#253043 · BOULDER OPAL
1.16 ct
AUD 900
1.16 ct
AUD 900
#252365 · BOULDER OPAL
21.80 ct
AUD 800
21.80 ct
AUD 800
#252959 · BOULDER OPAL
1.52 ct
AUD 800
1.52 ct
AUD 800
#288130 · BOULDER OPAL
3.28 ct
AUD 700
3.28 ct
AUD 700
#252815 · BOULDER OPAL
4.15 ct
AUD 600
4.15 ct
AUD 600
#253003 · BOULDER OPAL
7.25 ct
AUD 600
7.25 ct
AUD 600
#252785 · BOULDER OPAL
8.46 ct
AUD 600
8.46 ct
AUD 600
#252576 · BOULDER OPAL
4.08 ct
AUD 600
4.08 ct
AUD 600
#288135 · BOULDER OPAL
1.72 ct
AUD 600
1.72 ct
AUD 600
#252871 · BOULDER OPAL
1.09 ct
AUD 600
1.09 ct
AUD 600
#251319 · BOULDER OPAL
1.76 ct
AUD 600
1.76 ct
AUD 600
#252814 · BOULDER OPAL
7.05 ct
AUD 550
7.05 ct
AUD 550
#252436 · BOULDER OPAL
1.65 ct
AUD 500
1.65 ct
AUD 500
#252526 · BOULDER OPAL
3.95 ct
AUD 500
3.95 ct
AUD 500
#252929 · BOULDER OPAL
0.80 ct
AUD 450
0.80 ct
AUD 450
#230806 · BOULDER OPAL
2.35 ct
AUD 450
2.35 ct
AUD 450
#230653 · BOULDER OPAL
4.00 ct
AUD 450
4.00 ct
AUD 450
#252437 · BOULDER OPAL
1.15 ct
AUD 450
1.15 ct
AUD 450
#252591 · BOULDER OPAL
1.45 ct
AUD 450
1.45 ct
AUD 450
#252415 · BOULDER OPAL
1.37 ct
AUD 400
1.37 ct
AUD 400
#252924 · BOULDER OPAL
1.00 ct
AUD 400
1.00 ct
AUD 400
#230627 · BOULDER OPAL
10.27 ct (pair)
AUD 400
10.27 ct (pair)
AUD 400
#230637 · BOULDER OPAL
6.18 ct
AUD 400
6.18 ct
AUD 400
#252837 · BOULDER OPAL
2.63 ct
AUD 400
2.63 ct
AUD 400
#288153 · BOULDER OPAL
23.46 ct
AUD 380
23.46 ct
AUD 380
#230633 · BOULDER OPAL
3.83 ct
AUD 350
3.83 ct
AUD 350
#230683 · BOULDER OPAL
10.49 ct
AUD 300
10.49 ct
AUD 300
#253508 · BOULDER OPAL
21.61 ct (pair)
AUD 300
21.61 ct (pair)
AUD 300
#252872 · BOULDER OPAL
1.07 ct
AUD 300
1.07 ct
AUD 300
#288152 · BOULDER OPAL
21.60 ct (pair)
AUD 300
21.60 ct (pair)
AUD 300
#252463 · BOULDER OPAL
5.35 ct (pair)
AUD 250
5.35 ct (pair)
AUD 250
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