Video from 2019.
This collection of mummified scarabs, animals, statues, amulets, canopic jars, writing tools, papyri baskets and other artifacts was discovered back in 2018 in the King Userkaf pyramid complex at the ancient necropolis of Saqqara. The scarab beetle was sacred to the ancient Egyptians and scarab amulets were traded throughout the Mediterranean world:
"Scarabaeus sacer is the most famous of the scarab beetles. To the Ancient Egyptians, S. sacer was a symbol of Khepri, the early morning manifestation of the sun god Ra, from an analogy between the beetle's behaviour of rolling a ball of dung across the ground and Khepri's task of rolling the sun across the sky. They accordingly held the species to be sacred." (Wikipedia)
"The Egyptians also observed young beetles emerging from the ball of dung, from which they mistakenly inferred that the male beetle was able to reproduce without needing a female, simply by injecting his sperm into the ball of dung. From this, they drew parallels with their god Atum, who also begat children alone."
Video from 2012. Closed-captions useful.
I have no idea if the scarab shown in the top video is actually the largest in the world. The thing looks gigantic in the video, but according to Wikipedia, these beetles only range from around 1.5 mm to 160 mm (app. six inches) in length.
"The scarab was of prime significance in the funerary cult of ancient Egypt. Scarabs, generally, though not always, were cut from green stone, and placed on the chest of the deceased. Perhaps the most famous example of such 'heart scarabs' is the yellow-green pectoral scarab found among the entombed provisions of Tutankhamen."
These amulets were sometimes ornately engraved. Next video describes the heart scarab of Amunhotep III.