Q：How to gain a more comprehensive understanding of pearl classification.
A：Pearl classification can be considered from multiple aspects, including its origin, formation method, color, shape, size, surface quality, and more. Here are 7 relatively comprehensive methods of pearl classification listed below：
- Origin: Natural pearls: Formed inside mollusks, they are naturally occurring pearls, rare and precious. Cultured pearls: Artificially cultivated pearls, formed by implanting foreign objects (such as nuclei) into mollusks to induce pearl formation. Most pearls sold on the market are cultured pearls.
- Formation method: Freshwater pearls: Formed inside freshwater mollusks (such as freshwater mussels), commonly found in rivers and lakes. Saltwater pearls: Formed inside saltwater mollusks (such as oysters), typically of higher quality and price.
- Color: White pearls: The most common color, sometimes with a faint rose tone. Black pearls: Typically from specific mollusk species, such as Tahitian black pearls, ranging from dark gray to pure black. Pink pearls: Pearls with a light pink or pinkish hue, relatively rare. Golden/yellow pearls: Pearls with a golden-yellow or light yellow hue, also relatively rare.
- Shape: Round pearls: The most valuable and rare pearl shape, perfectly spherical. Semi-round pearls: Partially spherical but not completely round. Near-round pearls: Nearly spherical but slightly irregular. Baroque pearls: Irregularly shaped, typically less expensive.
- Size: Large pearls: Pearls with a diameter exceeding 10 millimeters. Medium pearls: Pearls with a diameter between 7-10 millimeters. Small pearls: Pearls with a diameter less than 7 millimeters.
- Surface Quality：flawless,very minor flaw,minor flaw,tiny flaw,flaws,many flaws.
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Luster：aurora ,bright light,medium light,weak light.
