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Rainbow Uncommon Earths (LSE:RBW) was a penny inventory buying and selling for simply 9p again in April. Quick ahead to now, the mining share is at 17p and has a £116m market cap. Over 5 years, it’s up practically 200%!
Nonetheless, uncommon earth mining shares are at the moment booming resulting from China tightening export controls, which has led to a worldwide scarcity. So, might Rainbow Uncommon Earth explode even greater over the subsequent few years? Let’s dig in a bit of deeper.
A rainbow in South Africa and Brazil
The corporate is concentrated on uncommon earth components (REEs) which might be wanted for the inexperienced vitality transition. In contrast to conventional miners although, it’s aiming to get them from industrial waste moderately than uncooked ore.
Its flagship Phalaborwa venture in South Africa intends to extract REEs from phosphogypsum, a by-product of fertiliser manufacturing. It says this venture has a base case web current worth of $611m.
And because of the a lot decrease working price than conventional mining, Phalaborwa may very well be probably the most worthwhile uncommon earth tasks in improvement at present exterior of China. It has sturdy monetary backing from the USA Worldwide Improvement Finance Company.
In the meantime, Rainbow says its Uberaba venture in Brazil “represents an thrilling alternative to copy Phalaborwa at a doubtlessly bigger dimension”. It’s working with associate The Mosaic Firm to quickly full an evaluation of this phosphogypsum venture, although its appears a way away at this stage.
Bullish development
As talked about, uncommon earth shares are sizzling proper now. Rainbow’s UK peer Pensana has seen it share worth shoot up 318% yr thus far!
Uncommon earths have particular magnetic properties, making them very important parts in electrical autos, defence tools and throughout the semiconductor business. China has a near-monopoly on them and has been utilizing them as bargaining chips within the commerce negotiations with the US.
For sure, the West is actually prioritising uncommon earths proper now, particularly since President Trump got here to energy. So there’s an enormous potential business alternative on the horizon for Rainbow.
There have been 4 massive booms. You had the gold growth within the nineteenth century, the oil growth within the twentieth century, within the early twenty first century you had the tech growth — and now you’ve obtained the uncommon earths growth.
Tony Sage, CEO of Important Metals, chatting with CNBC.
No gross sales
As thrilling as this all sounds, the agency isn’t but producing any income, not to mention income. So that is most undoubtedly a speculative small-cap, and there’s more likely to be dilution with new share gross sales alongside the way in which.
Final month, Rainbow stated that Phalaborwa’s definitive feasibility examine is predicted to be finalised in 2026, with building anticipated to begin in 2027. After that, it might increase globally, with strategic partnerships in Saudi Arabia, Morocco and Canada being evaluated.
Chasing rainbows?
Personally, this share is just too speculative for me. I keep in mind the 2020-22 growth in lithium shares, then the painful bust afterwards. Lithium shares nonetheless haven’t recovered from their peak, and I worry we’d see one thing comparable with uncommon earths.
Buyers nonetheless contemplating Rainbow inventory ought to assess the dangers in addition to the rewards. It might mint a fortune, or crash and burn.

