Warm waters… clear skies… dramatic scenery – it sounds like a dream beach vacation, don’t you think? It’s also an accurate description of where you'll often find these pearl birthstones.  Pearl-bearing mollusks fail to thrive in polluted waters, so pearl farms are usually located far from civilization – and often in breathtaking settings.

Saltwater cultured pearls are grown in many areas around the world. Akoya cultured pearl farms are primarily found in Japan and China, especially along the southern coasts of Guangdong and Guangxi provinces. South Sea cultured pearls are farmed from the northern coast of Australia through Indonesia to the southern coast of Southeast Asia, with large operations in the Philippines as well. The Gambier Islands and the Tuamotu Archipelago, both part of French Polynesia, are two locales where the rich black Tahitian pearls are cultured. China is the dominant source of freshwater cultured pearls.

Source:  GIA.EDU