Nature has a lot to offer to humans. Most precious jewelry is made from metals and stones buried deep within the Earth’s surface but the discovery of these rare jewels is not just limited to land. The ...

Mollusks maintain the symmetry of their pearls by adjusting the thickness of each layer of shimmering nacre. If one layer of the pearl’s nacre is thinner, the next layer is thicker and will balance ...

• Natural pearls: Formed without human interference, these are incredibly rare. • Cultured pearls: The process is natural, but guided by farmers who carefully place a nucleus inside the mollusc to ...