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Description
Australian Queensland Boulder Matrix opal single 27cts Tumbled rough Koroit Bright Blue fires & Lots potential 20x19x8mm BFA39This is a single Boulder opal of the Queensland opal fields. From Koroit mining area , this is a opal in ironstone matrix This has been tumbled to exposed the potential to work with with lots of bright blue fires showing on the face veins , potential here Please note boulder opal is ironstone host rock with deposits of opal. Details: #BFA39 Weight: 27cts Grade: POTENTIAL GRADE Base Colour: Boulder tone Source: Queensland Australia Field: Koroit Size:
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Best in 7 days
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Best in 7 days
4.9 ★★★★★
Based on 2126 reviews
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Product Reviews
★★★★★ 5
How was the item? K&N Select Oil Filter: Designed to Protect
Easy to use
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Reviewed in the United States on April 18, 2026
★★★★★ 5
.
GREAT
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Reviewed in the United States on May 19, 2026
★★★★★ 5
Well worth it
Worked out perfectly, smooth install, supplied all gaskets and most important the low price.
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Reviewed in the United States on July 18, 2025
★★★★★ 4
Easy to Install - Good Value for the Money
This is my first experience with K&N engine oil filters. I purchased one through AMZN and it was cheaper than expected. I may have purchased it on sale, because it was only $10. K&N is known to have great products, so I will update this review after I've used this filter for a while. So far, it seems to be working fine.
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Reviewed in the United States on June 25, 2024
★★★★★ 5
Great plug
Style: Single
My car goes through these every 30,000 miles or so. But fantastic plug all around. Performs flawlessly even at almost 9000 rpm.
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Reviewed in the United States on September 11, 2015
![Vedalken Orrery (Foil Etched) [Double Masters 2022]](https://cdn.shopify.com/s/files/1/0615/8624/3793/files/b7d9d9e8-a07d-5354-b9ba-35b472a9eb02.jpg?v=1731511177)
