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Boulder opal

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Home / Loose Diamonds & Gemstones / Boulder opal refurbished & used for sale | For Sale UK
Australian boulder opal 7 - opal, 30.7

Australian boulder opal 7 - opal, 30.7

£264.51 · Buy It Now

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Queensland boulder opal - queensland, resin

Queensland boulder opal - queensland, resin

£104.70 · Buy It Now

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Stunning sterling silver - stunning,

Stunning sterling silver - stunning,

£32.50 · Buy It Now

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Australian boulder opal large - australian,

Australian boulder opal large - australian,

£35.00 · Buy It Now

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Cts boulder opal - cts,

Cts boulder opal - cts,

£63.09 · Buy It Now

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7ct queensland boulder opal - 7.7ct,

7ct queensland boulder opal - 7.7ct,

£47.57 · Buy It Now

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Australian boulder opal - opal, 9k

Australian boulder opal - opal, 9k

£424.90 · Buy It Now

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Australian boulder opal rough

Australian boulder opal rough

£139.37 · Buy It Now

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6ct queensland boulder opal - boulder,

6ct queensland boulder opal - boulder,

£119.56 · Buy It Now

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0ct queensland boulder opal - 6.0ct,

0ct queensland boulder opal - 6.0ct,

£107.56 · Buy It Now

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925 sterling silver boulder - silver,

925 sterling silver boulder - silver,

£136.03 · Buy It Now

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7ct queensland boulder - boulder, opal

7ct queensland boulder - boulder, opal

£149.63 · Buy It Now

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Boulder opal sterling silver - boulder,

Boulder opal sterling silver - boulder,

£368.30 · Buy It Now

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Boulder opal oval - boulder,

Boulder opal oval - boulder,

£14.78 · Buy It Now

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Boulder opal from - boulder,

Boulder opal from - boulder,

£12.95 · Buy It Now

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Multi color boulder opal 30 - multi-color,

Multi color boulder opal 30 - multi-color,

£14.41 · Buy It Now

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Boulder opal sterling silver - boulder,

Boulder opal sterling silver - boulder,

£1192.34 · Buy It Now

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Vtg bogarz 14k yellow - yellow, gold

Vtg bogarz 14k yellow - yellow, gold

£902.36 · Buy It Now

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219 cts australian - australian, boulder

219 cts australian - australian, boulder

£24.57 · Buy It Now

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Gold plated sterling - gold,

Gold plated sterling - gold,

£20.00 · Buy It Now

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Natural solid australian - solid,

Natural solid australian - solid,

£146.30 · Buy It Now

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Cts australian boulder - 35,

Cts australian boulder - 35,

£15.03 · Buy It Now

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Australian boulder opal - australian,

Australian boulder opal - australian,

£124.00 · Buy It Now

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Cts australian boulder - 26,

Cts australian boulder - 26,

£15.03 · Buy It Now

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206 cts australian boulder - cts,

206 cts australian boulder - cts,

£28.73 · Buy It Now

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9kt rose gold blue - 9kt, lagoon

9kt rose gold blue - 9kt, lagoon

£195.00 · Buy It Now

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Sterling silver 7ct - sterling, 3.7ct

Sterling silver 7ct - sterling, 3.7ct

£50.00 · Buy It Now

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Australian boulder opal - boulder,

Australian boulder opal - boulder,

£185.47 · Buy It Now

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50ct australian - 30.50ct,

50ct australian - 30.50ct,

£68.30 · Buy It Now

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Australian certified boulder - certified,

Australian certified boulder - certified,

£26.75 · Buy It Now

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Sterling silver australian - sterling,

Sterling silver australian - sterling,

£39.50 · Buy It Now

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Certified boulder opal - certified,

Certified boulder opal - certified,

£14.98 · Buy It Now

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Australian koroit yowah - koroit, /

Australian koroit yowah - koroit, /

£108.11 · Buy It Now

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Aussie queensland surf - 49.7c,

Aussie queensland surf - 49.7c,

£124.00 · Buy It Now

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Cts australian boulder - 25,

Cts australian boulder - 25,

£24.57 · Buy It Now

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295 cts australian - 295,

295 cts australian - 295,

£30.86 · Buy It Now

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Modern 9ct gold - gold, plated

Modern 9ct gold - gold, plated

£75.00 · Buy It Now

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Australian boulder pipe - australian, opal

Australian boulder pipe - australian, opal

£48.65 · Buy It Now

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Boulder opal loose vintage - opal,

Boulder opal loose vintage - opal,

£78.70 · Buy It Now

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Australian boulder opal rough - australian,

Australian boulder opal rough - australian,

£58.00 · Buy It Now

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Tjc australian boulder opal - opal, &

Tjc australian boulder opal - opal, &

£50.00 · Buy It Now

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Boulder opal 150g - boulder, yowah

Boulder opal 150g - boulder, yowah

£95.39 · Buy It Now

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Aussie queensland surf - 53.2c,

Aussie queensland surf - 53.2c,

£88.39 · Buy It Now

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Queensland boulder opal - boulder,

Queensland boulder opal - boulder,

£21.45 · Buy It Now

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Cts australian boulder - australian,

Cts australian boulder - australian,

£15.03 · Buy It Now

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136 cts australian - cts, boulder

136 cts australian - cts, boulder

£20.38 · Buy It Now

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Cts australian boulder - 60,

Cts australian boulder - 60,

£15.03 · Buy It Now

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121 cts australian boulder - 121,

121 cts australian boulder - 121,

£20.38 · Buy It Now

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Australian boulder opal - australian,

Australian boulder opal - australian,

£55.00 · Buy It Now

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171 cts australian boulder - 171,

171 cts australian boulder - 171,

£26.65 · Buy It Now

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Boulder opal 97ct x 11mm - boulder,

Boulder opal 97ct x 11mm - boulder,

£94.75 · Buy It Now

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Australian boulder opal - boulder,

Australian boulder opal - boulder,

£159.46 · Buy It Now

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Boulder opal zircon halo - boulder,

Boulder opal zircon halo - boulder,

£49.99 · Buy It Now

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Natural solid australian yowah - natural,

Natural solid australian yowah - natural,

£155.14 · Buy It Now

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Vintage 9ct gold natural - vintage, solid

Vintage 9ct gold natural - vintage, solid

£175.00 · Buy It Now

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33cts australian boulder - 33cts,

33cts australian boulder - 33cts,

£13.96 · Buy It Now

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Aussie natural boulder opal - aussie,

Aussie natural boulder opal - aussie,

£69.31 · Buy It Now

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Australian boulder opal - australian,

Australian boulder opal - australian,

£168.91 · Buy It Now

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250c aussie queensland - queensland, 10x

250c aussie queensland - queensland, 10x

£56.60 · Buy It Now

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Cts australian boulder - 14,

Cts australian boulder - 14,

£15.03 · Buy It Now

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9ct gold natural australian - gold,

9ct gold natural australian - gold,

£344.45 · Buy It Now

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3cts opalton natural - opalton,,

3cts opalton natural - opalton,,

£12.89 · Buy It Now

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160 cts australian boulder - cts,

160 cts australian boulder - cts,

£26.65 · Buy It Now

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Special australian boulder - australian,

Special australian boulder - australian,

£27.03 · Buy It Now

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256 cts australian boulder - australian,

256 cts australian boulder - australian,

£26.65 · Buy It Now

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Australian boulder pipe - boulder,

Australian boulder pipe - boulder,

£202.70 · Buy It Now

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Australian boulder opal - opal, 5.18ct

Australian boulder opal - opal, 5.18ct

£190.77 · Buy It Now

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Australian cts boulder opal - australian,

Australian cts boulder opal - australian,

£25.61 · Buy It Now

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Cts australian boulder - cts,

Cts australian boulder - cts,

£20.38 · Buy It Now

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Cts australia boulder opal - 3.5,

Cts australia boulder opal - 3.5,

£28.62 · Buy It Now

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11ct natural australian - 21.11ct,

11ct natural australian - 21.11ct,

£85.00 · Buy It Now

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Boulder opal large - opal, natural

Boulder opal large - opal, natural

£22.00 · Buy It Now

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Cts australian boulder - 54,

Cts australian boulder - 54,

£19.31 · Buy It Now

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Cts australian boulder - 32,

Cts australian boulder - 32,

£15.03 · Buy It Now

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Gemporia boulder opal and - gemporia,

Gemporia boulder opal and - gemporia,

£47.50 · Buy It Now

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Australian yowah boulder opal - australian,

Australian yowah boulder opal - australian,

£31.85 · Buy It Now

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Australian cts boulder - 30,

Australian cts boulder - 30,

£26.39 · Buy It Now

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Boulder opal 18ct - opal, 16mm

Boulder opal 18ct - opal, 16mm

£136.72 · Buy It Now

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Hand made koroit - , opal

Hand made koroit - , opal

£37.09 · Buy It Now

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Boulder opal cabochon freeform - opal,

Boulder opal cabochon freeform - opal,

£118.00 · Buy It Now

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Australian boulder opal - boulder,

Australian boulder opal - boulder,

£35.13 · Buy It Now

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117 cts australian boulder - 117,

117 cts australian boulder - 117,

£24.57 · Buy It Now

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Australian natural queensland - australian,

Australian natural queensland - australian,

£225.22 · Buy It Now

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26cts australian boulder rough - australian,

26cts australian boulder rough - australian,

£18.24 · Buy It Now

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Australian boulder opal 32ct - australian,

Australian boulder opal 32ct - australian,

£24.32 · Buy It Now

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Boulder opal polished please - boulder, (please

Boulder opal polished please - boulder, (please

£31.89 · Buy It Now

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116cts ready polish - 116cts,

116cts ready polish - 116cts,

£19.31 · Buy It Now

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Australian boulder opal - australian, 0.72ct

Australian boulder opal - australian, 0.72ct

£27.03 · Buy It Now

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Cts australian boulder - cts,

Cts australian boulder - cts,

£19.31 · Buy It Now

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Lucky aussie queensland - 11.6c,

Lucky aussie queensland - 11.6c,

£37.52 · Buy It Now

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Aussie natural boulder - aussie,

Aussie natural boulder - aussie,

£69.31 · Buy It Now

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5cts queensland boulder - queensland,

5cts queensland boulder - queensland,

£47.69 · Buy It Now

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925 silver massive vintage - -,

925 silver massive vintage - -,

£331.38 · Buy It Now

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41cts australian boulder rough - boulder,

41cts australian boulder rough - boulder,

£13.90 · Buy It Now

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Natural boulder opal 70 - natural,

Natural boulder opal 70 - natural,

£16.90 · Buy It Now

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9cts queensland boulder - 33.9cts,

9cts queensland boulder - 33.9cts,

£39.73 · Buy It Now

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📊96 listings · from £12.89 · avg £98.16
⚠️ These listings were last updated more than 23 days ago. Search for fresh listings

Browse 96 boulder opal listings currently in our index. Prices range from £12.89 to £1192.34, with an average of £98.16. Whether you are hunting for a bargain or looking for a top-spec model, the selection below covers all price points — new, used and refurbished. More about boulder opal →

Try this: bulk crystals | ceylon sapphire | clear quartz crystals | coober pedy opal | fire opal stone | garnet stone | loose black diamonds | loose opals | melee diamonds | merkaba

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Everything you need to know about boulder opal

Whether you are looking for a brand-new or second-hand boulder opal, eBay offers one of the largest selections available online. With 96 active listings at the time of this page's last update, you have plenty of choice across different conditions, sellers and price points. The cheapest option currently starts at £12.89, while premium listings can reach £1192.34 — giving you a wide budget spread to work with. The average price of £98.16 can serve as a useful benchmark: listings below this tend to be used or auction-style, while those above often include extra accessories, warranties, or are sold by professional sellers with high feedback scores. Always check the seller's feedback rating and return policy before committing to a purchase. If you need the item quickly, filter by "Buy It Now" to avoid the uncertainty of auctions. For used items, look closely at the condition description and photos — terms like "good", "very good" and "like new" can mean very different things depending on the seller.

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