South Sea pearls are a type of pearl that is cultivated in the warm waters of the South Pacific Ocean, particularly in the region around Indonesia, the Philippines, and Australia. These pearls are known for their large size and high quality, with some examples reaching over 20 millimeters in diameter.

They are also prized for their lustrous appearance, with a white, creamy, or gold color that is highly prized in the jewelry industry. South Sea pearls are typically more expensive than other types of pearls due to their rarity and high demand.