The Cullinan is the largest gem-quality diamond ever found. In its raw state, it was the size of a human fist and weighed 3,106 carats (621.2 g). Only Sergio beats it in the world rankings, weighing just 60 carats (12.2 g). This black diamond with no gem-quality value (carbonado) was entirely processed into industrial drills.

It looks terrifying, doesn't it? It inhabits the depths off the coast of Europe and Asia, down to 1,000 meters. It spends most of its time buried in sediment on the bottom.

There are people who had a huge impact on the development of humanity. So much so that their names remain with us for a long time.

A fossilized ichthyosaur of the genus Stenopterygius from Holzmaden in Germany was purchased in 1851 for the collection of the Mineralogical Cabinet of the Jagiellonian University. Thus begins the turbulent story of a certain record - we invite you to read!

This tiny bird is one of the rarest animals in nature, with a wild population of fewer than 50 individuals now.