40 unique natural wonders of the world (26 – 30)

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26. Merelani Hills – the only find of tanzanite

Tanzanite
Tanzanite / Rob Lavinsky, Wikimedia Commons / CC BY-SA 3.0
Where?Africa, Tanzania
Why unique?The only known place in the world where is found a gorgeous gemstone – tanzanite. This find might be exhausted in the coming decades – thus tanzanite is a precious, very unusual gift by nature in a strictly limited amount.

27. Moconá Falls (Yucumã Falls)

Moconá Falls - approximately 2 km wide waterfall
Moconá Falls – approximately 2 km wide waterfall / Leandro Kibisz, Wikimedia Commons / CC BY-SA 2.5
Where?South America, Argentina and Brazil
Why unique?Unusual waterfall which is not perpendicular to the stream but PARALLEL. As a result this could be the second widest waterfall in the world – it is 1.8 – 2.7 km wide.

28. Morning Glory of Carpentaria Gulf

Morning Glory clouds, Queensland
Morning Glory clouds, Queensland / Mick Petroff, Wikimedia Commons, 11 August 2009, CC-BY-SA-3.0
Where?Australia
Why unique?The only place in the world where on a regular basis can be observed very rare meteorological phenomena – fast sequence of roll clouds which are nicknamed “morning glory”.

29. North-West Eifuku Champagne Vent

Eifuku Champagne Vent emitting bubbles of liquid carbon dioxide, Northern Marianas
Eifuku Champagne Vent emitting bubbles of liquid carbon dioxide / U.S. Geological Survey / public domain.
Where?Oceania, Northern Mariana Islands
Why unique?The only large springs which emit liquid carbon dioxide. Carbon dioxide is emitted at the depth of 1,607 m in a form of milky-colored bubbles, quickly rising towards the surface of ocean.

30. Oklo Mines – the only natural nuclear reactor

Flooded mine in Mounana, Oklo in Gabon
Flooded mine in Mounana, Oklo / nicktsurikov, screenshot from video
Where?Africa, Gabon
Why unique?The only known place on Earth where nature itself launched a nuclear reaction. It happened here some 1.8 – 1.7 billion years ago. Temperature of the ground reached some 200 – 300°C and reaction continued for hundreds of thousands of years.
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Map, 40 unique natural wonders of the world

Unique finds of gemstones

Every kind of gemstones is rare but some are unique or nearly unique. There are hundreds of kinds of gemstones – separate minerals and their varieties. Some gemstones have been found only in a few examples, such as musgravite (rumors about 8 cut gems of this stone), taaffeite (some 50 gem-quality pieces), painite (some thousands are known to exist) or poudretteite. But there are some gemstones or varieties of gemstones which are found exclusively in a single location. Or a few locations.

One of such gems is the elusive blue amber. Most of these stones are found in Palo Quemado mine (Dominican Republic), but there are some more finds of these amazing gems around the world.

The blue amber from the Dominican Republic
The blue amber from the Dominican Republic / Vassil, / public domain

Another example of exclusive finds is benitoite. In gem quality, it is found only in California, although this mineral is known in several more places.

Benitoite crystals from San Benito, United States
Benitoite crystals from San Benito, United States / Didier Descouens, / CC BY-SA 3.0

There are more places of unique gemstone finds – such as the finds of best lazurite, clinohumite, ametrine, pezzottaite, bixbite, and many others.

In fact – Wondermondo could fill this list of 40 unique natural places only with gemstone finds. Not this time, not yet…

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