| Freshwater | Akoya | South Sea | Tahitian | |
|---|---|---|---|---|
| Where they come from | China, also produced in the US | Japan and China | Western Australia and Indonesia | French Polynesia |
| Average size | 4.0‐14.0mm | 6.0 – 8.0mm | 10.0 – 15.0mm | 8.0‐10.0mm |
| Color | These pearls are popular to dye, and can be foundin a variety of colors: white, pink, blue, lavender, green | White or cream with silver or pink overtones | White with golden-yellow overtones | Typically black or gray with colorful green, blue, sliver, pink, or yellow overtones |
| Special characteristics | Freshwater pearls are the most popular pearl used by fine jewelers today. | Akoya pearls can be more expensive because their oysters can only be cultivated once. | South Sea oysters produce the largest pearls in the world. | Unique to Tahitian pearls, they can display multiple colors at once. These vibrant versions are called peacock pearls. |
When you purchase cultured pearls from a jeweler, asking for a certificate of authenticity is a good way to make sure your pearls are real. If you want to test pearl jewelry you already own, you can check if your pearls are real with a few simple at-home tests: