Mar 9, 2015

[PHOTOS] Top 10 Rarest Gems Found on Earth

2 min
[PHOTOS] Top 10 Rarest Gemstones Found on Earth
For one reason or another, whether it’s jewelry, cars, art or sports memorabilia, people are attracted to the finer things in life. The rarer a...

For one reason or another, whether it’s jewelry, cars, art or sports memorabilia, people are attracted to the finer things in life. The rarer an item is, the more exclusivity it holds.

Gems for example, take millions of years to form in nature and only a fraction of them will ever be found, mined, cut and sold as gemstones. The following 10 gems are the world’s rarest and most valuable gemstones.  

10. Poudretteite

First discovered in the 1960s in the Poudrette quarry of Mon Saint Hilaire, Quebec, Poudretteite is one of the rarest gems known today.

9. Tanzanite

Aside from purchasing it, the only way you’ll ever obtain Tanzanite is by traveling to the foothills of Mount Kilimanjaro in Northern Tanzania. The blue-purple stone is extremely rare and could potentially be mined out within 20-30 years.

8. Benitoite

Typically found near the San Benito River in California, Benitoite is a blue to purple gemstone first discovered in 1907. The best part of this gem is when put under UV light it resembles glowing blue chalk.

7.  Grandidierite

Found almost exclusively in Madagascar, this bluish-green mineral is pleochroic and can transmit blue, green, and white light.

6. Black Opal

While opal may be Australia’s national gemstone, black opal is the rarest and most valuable of its kind.

5. Red Beryl

There is only one known commercial production of gem-quality red beryl in the world and it’s located at the Ruby Violet mine in the Wah Wah Mountains of Beaver County, Utah.

4. Jadeite

Mainly found in limited quantities, Jadeite is most valuable when it is colored a deep, translucent green. In 1997, Christie’s auction house sold a Jadeite necklace for nearly $10 million.

3. Taaffeite

Named after the Bohemian-Irish gemologist Richard Taaffe who discovered it in 1945, Taaffeite is a very rare gem. In fact, only a handful of these precious stones have ever been found, making them a true collector’s gem.

2. Alexandrite

The hype behind Alexandrite is due to its color-changing properties (and its scarcity relative to diamond). These unique traits make a rare combination of minerals that includes titanium, iron and chromium.

1. Painite

According to many, including the Guinness Book of World Record, Painite is the world’s rarest mineral. For decades, only two crystals were known to exist. The mineral is made up of aluminium, calcium, boron, zirconium and oxygen. 


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Jan 30, 2019

Deloitte predicts industry transformation - Tracking the Trends 2019 report

Daniel Brightmore
3 min
Deloitte reveals top ten trends transforming mining in annual Tracking the Trends report
Deloitte has published the eleventh edition of its an...

Deloitte has published the eleventh edition of its annual report on the mining industry. Tracking the Trends identifies the top ten trends transforming the future of mining in 2019

The Deloitte report endeavours to provide the mining industry with insights it can leverage to support its continued quest for productivity, capital discipline, strategic development and sustainable growth.

Philip Hopwood, Deloitte’s Global Leader - Mining & Metals, commented: “It appears that the mining industry is poised for greater growth than it’s seen in a decade, but today’s market realities are very different than those of the past. We’re now dealing with geopolitical tensions in the form of trade wars and tariff concerns, as well as looming asset shortages. Rising commodity prices should fuel expansion, but could also result in a return of inflation and the costs that go with it, eventually eating into margins. 

Disruption and volatility has become the new normal and the pace of change is outpacing our ability to adapt. This makes it imperative for mining companies to clarify how they plan to drive value into the future and how they intend to respond when prices inevitably drop again.” 

Related stories:

EY survey finds losing 'licence to operate' is the biggest risk to the industry in 2019

Predicting the disruptors of tomorrow’s mining industry: Deloitte’s tracking the trends 2018

Renewables the key to energy cost savings and competitive edge says Deloitte

Here are the key messages provided by the 2019 report:

  • Disruption and volatilitymake it imperative for mining companies to clarify how they plan to drive value into the future and how they intend to respond when prices inevitably drop again. To thrive into the future, mining companies will need to challenge the status quo by soliciting a diversity of opinions and taking the risk to do things differently. 


  • Technology and artificial intelligence (AI) will play akey role, not only in helping companies envision future scenarios, but in identifying risks at an enterprise level and transforming the supply chain. Moreover, advances in finance platforms, sensor technology, autonomous vehicles, cloud- based solutions, and analytics are paving the way for the design of a digital mine. 


  • Understanding the needsand perceptions of people both inside and outside the organization will be critical. Companies must build amore diverse workplace and address succession planning, while fostering loyalty and retention among existing employees. At the same time companies must do more outreach to local communities, governments, and consumers so they can be more transparent and receptive. 


Top Ten Trends Transforming the Future of Mining:

  1. Rethinking mining strategy - Embedding the discipline to deliver measurable value across the cycle 
  2. The frontier of analytics and artifcial intelligenceMoving up the maturity curve 
  3. Managing risk in the digital era - Exploring a new approach to controls and risk management 
  4. Digitizing the supply chain - Why innovation requires integration 
  5. Driving sustainable shared social outcomes - Finding value beyond compliance 
  6. Exploring the water-energy nexus - Making the case for a systematic approach 
  7. Decoding capital projects - Learning from past mistakes
  8. Reimagining work, workers, and the workplace - A blueprint for the future 
  9. Operationalising diversity and inclusion programs - From theory to practice 
  10. Demanding provenanceEVs and battery minerals provoke the desire for provenance 

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