Rare Discovery Surprises: 100-Million-Year-Old Fossilized Pearl is Largest Ever Recorded in Australia

Written by Romário Pereira de Carvalho

Published on 21/08/2025 at 17:09

As pérolas são estruturas produzidas por moluscos, como ostras e mexilhões, em resposta à entrada de um corpo estranho dentro das suas conchas — Foto: Divulgação/Kronosaurus Korner

1 person reacted to this.

Gigantic Fossil Pearl From 100 Million Years Ago Discovered in Richmond, Interior Australia, Revealing Details About Mollusks From the Cretaceous Period

A rare discovery has captured attention in Queensland, Australia. An extremely ancient fossil pearl was excavated in Richmond, a small town known for its paleontological finds.

According to Gregory Webb, a paleontologist at the University of Queensland, the pearl measures nearly two centimeters in diameter, larger than a marble.

It is the largest ever found in the country. For him, the find is “one of the most significant discoveries of fossil mollusks in Australia, due to its enormous size.”

ARTICLE CONTINUES BELOW

Discovery Made by Tourist

The find occurred in 2019, when a tourist visiting the Kronosaurus Korner museum participated in a dig at one of the local sites.

In the town, with just over 500 residents, visitors can obtain permission to excavate fossils but must turn over everything of scientific value to the museum.

The tourist followed this rule and handed the pearl to volunteer Barbara Flewelling. The piece was then analyzed by Webb and his team over two years.

The process was delayed because the museum faced staff turnover and the Covid-19 pandemic interrupted research activities.

Analyses Confirmed Authenticity

Webb explained that the team used advanced technology to investigate the fossil without damaging it. “We confirmed that it is indeed a pearl,” he stated.

In Australia, only two other prehistoric pearls had been found. Both were smaller and formed of silica, which made them opalized specimens.

Unlike them, the new pearl is composed of calcium carbonate, the same material as true pearls.

Pearl Over 100 Million Years Old

The fossil, now on display at the Kronosaurus Korner museum, has been described as of extremely high quality, nearly intact after 100 million years.

Webb noted that the preservation is due to the fact that the pearl formed within a calcite shell, a mineral more stable than aragonite used by modern pearls.

Although today it is considered rare, the appearance of these pearls was common during the Cretaceous period.

They were produced by mollusks of the genus Inoceramus, which could reach up to 50 centimeters in diameter in the Australian region. In other parts of the world, these animals could grow to two meters.

Window to Understand Biology

For Webb, fossils like this help to better understand current biological processes.

“By observing how ancient biology, ecosystems, and communities reacted to changes around them, we can better understand how our modern biology also reacts,” concluded the researcher.

Rare Discovery Surprises: 100-Million-Year-Old Fossilized Pearl is Largest Ever Recorded in Australia

Gigantic Fossil Pearl From 100 Million Years Ago Discovered in Richmond, Interior Australia, Revealing Details About Mollusks From the Cretaceous Period

Discovery Made by Tourist

Analyses Confirmed Authenticity

Pearl Over 100 Million Years Old

Window to Understand Biology

Gaddafi built the world’s largest artificial river under the Sahara — it’s 4,000 km of giant pipes that pump 40,000-year-old fossil water to entire cities in Libya.

Discovery in Africa scares even scientists: a study published on April 23 reveals that the crust in Turkana has become so thin that it could pave the way for the continent’s division and the emergence of an ocean in the future, in a gigantic geological transformation.

Austria inaugurates Europe’s first high-speed railway outside China — trains travel at 250 km/h through 33 km tunnels in the Alps that took 27 years to drill

Japanese garbage collectors treat filthy trucks as if they were dealership cars, and the obsession with cleanliness is so absurd that they invented a washing machine that only exists for this type of vehicle.

An unmanned Russian ship has been drifting in the Mediterranean for 57 days with 60,000 tons of gas — the second towing attempt has just failed.

An engine that consumes 40% less gasoline than the average new car already exists and runs on 100% renewable fuel that costs only 10 cents more per liter at Repsol stations.

A waterfall with an infinity pool effect, 50 meters high, has become a tourist sensation in a little-known city in the South of Santa Catarina.

Students from São Gonçalo surprise Brazil by securing a spot in an international robotics competition with extreme dedication and an innovative project

Internal link resolution test

A cold front with up to 100 mm of rain advances across Brazil and will turn the long holiday weekend into winter weather with a sharp drop in temperature in the South and Southeast.

With the Strait of Hormuz closed and Brent above US$111, the West discovers that the crisis doesn’t end with oil: China dominates the refining of critical minerals, controls almost 90% of rare earths, and exposes the energy transition to a dependency without a quick solution.

Rare Discovery Surprises: 100-Million-Year-Old Fossilized Pearl is Largest Ever Recorded in Australia

Gigantic Fossil Pearl From 100 Million Years Ago Discovered in Richmond, Interior Australia, Revealing Details About Mollusks From the Cretaceous Period

Discovery Made by Tourist

Analyses Confirmed Authenticity

Pearl Over 100 Million Years Old

Window to Understand Biology

Gaddafi built the world’s largest artificial river under the Sahara — it’s 4,000 km of giant pipes that pump 40,000-year-old fossil water to entire cities in Libya.

Discovery in Africa scares even scientists: a study published on April 23 reveals that the crust in Turkana has become so thin that it could pave the way for the continent’s division and the emergence of an ocean in the future, in a gigantic geological transformation.

Austria inaugurates Europe’s first high-speed railway outside China — trains travel at 250 km/h through 33 km tunnels in the Alps that took 27 years to drill

Japanese garbage collectors treat filthy trucks as if they were dealership cars, and the obsession with cleanliness is so absurd that they invented a washing machine that only exists for this type of vehicle.

An unmanned Russian ship has been drifting in the Mediterranean for 57 days with 60,000 tons of gas — the second towing attempt has just failed.

An engine that consumes 40% less gasoline than the average new car already exists and runs on 100% renewable fuel that costs only 10 cents more per liter at Repsol stations.

Students from São Gonçalo surprise Brazil by securing a spot in an international robotics competition with extreme dedication and an innovative project

Internal link resolution test

A cold front with up to 100 mm of rain advances across Brazil and will turn the long holiday weekend into winter weather with a sharp drop in temperature in the South and Southeast.

Asteroid 300 million km away reveals all DNA bases

Goodbye ordinary robot vacuum: LG introduces a model that hides the station under the sink, self-washes and dries the mop, uses 100°C steam, automatically drains water into the sewer, empties dust, and monitors dirt in real-time.

A waterfall with an infinity pool effect, 50 meters high, has become a tourist sensation in a little-known city in the South of Santa Catarina.

Students from São Gonçalo surprise Brazil by securing a spot in an international robotics competition with extreme dedication and an innovative project

Internal link resolution test

A cold front with up to 100 mm of rain advances across Brazil and will turn the long holiday weekend into winter weather with a sharp drop in temperature in the South and Southeast.

With the Strait of Hormuz closed and Brent above US$111, the West discovers that the crisis doesn’t end with oil: China dominates the refining of critical minerals, controls almost 90% of rare earths, and exposes the energy transition to a dependency without a quick solution.