Where is Pearl found?
Biogenic (calcium carbonate)
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Open the appPearl occurs in specific geological environments. Knowing where to look, and in what kind of rock, is the difference between going home empty-handed and finding a great specimen.
Where to find Pearl
Persian Gulf
Historically a major source of natural pearls, particularly around Bahrain and the United Arab Emirates.
Red Sea
Another ancient source of natural pearls.
Australia
Known for large South Sea cultured pearls, particularly from the Pinctada maxima oyster.
Japan
Pioneered cultured pearl production (Akoya pearls from Pinctada fucata martensii).
China
Leading producer of freshwater cultured pearls (from Hyriopsis cumingii and other freshwater mussels).
French Polynesia
Famous for Tahitian cultured pearls (black pearls from Pinctada margaritifera).
Philippines
Producer of South Sea cultured pearls.
Collecting tips
- Natural vs. Cultured. Distinguishing natural from cultured pearls often requires X-ray examination by a gemological laboratory to observe the internal structure (presence or absence of a bead nucleus).
- Saltwater vs. Freshwater. Saltwater pearls typically come from oysters and are often rounder and have a higher luster. Freshwater pearls come from mussels and can be found in a wider variety of shapes and colors.
- Quality Factors. Pearl quality is assessed based on size, shape, color, luster, surface quality, and nacre thickness.
- Care and Handling. Pearls are relatively soft and can be damaged by acids, perfumes, hairspray, and abrasive materials. Store them separately from other jewelry and clean with a soft, damp cloth.
Quick Check
- Color:
- Wide range, often white, cream, pink, black.
- Luster:
- Pearly (nacreous), often with orient.
- Streak:
- White
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