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A Brief History of Pearls: Surface of South Sea Pearls

The short answer

South Sea pearl surfaces are graded from clean to heavily blemished, looking for bumps, cracks, circles, spots, pits and wrinkles. A few small marks are normal and often do not reduce beauty or value, because flawless South Sea pearls are so rare after 2 to 3 years of growth.

Reviewed by American Pearl’s pearl specialists · Updated October 2026
  A brief history of pearls

SURFACE OF SOUTH SEA PEARLS


Surface quality is always important in determining the value of any pearl, and South Sea pearls are no exception.



What is Surface Quality on South Sea Pearls?

The term surface quality refers to how "clean" a pearl's surface is. In fact, experts gauge a pearl's surface quality by looking for blemishes such as:


  • Bumps
  • Cracks
  • Circles
  • Spots
  • Pits
  • Wrinkles

When a pearl's surface is dominated by flaws, it may be considered "heavily blemished." However, when it's relatively free of inclusions and other blemishes, experts place it in one of various grades of "clean."

Damaging and Non-Damaging Blemishes

Damaging blemishes are those that tend to become worse with time, and they are typically those introduced to the pearl during processing. Damaging blemishes can include cracks and chips that occur near drill holes.

Non-damaging blemishes are those that don't become worse over time, such as wrinkles, spots and bumps.

It's important to remember that some blemishes won't detract from the beauty or value of a pearl, and this is particularly true with South Sea pearls. That's because it takes these pearls 2 to 3 years to develop, and flawless or slightly flawed South Sea pearls are extremely rare.

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South Sea pearl surface: common questions

What surface flaws do South Sea pearls have?

The surface flaws South Sea pearls have are bumps, cracks, circles, spots, pits and wrinkles.

Do small blemishes lower a South Sea pearl’s value?

Small blemishes do not always lower a South Sea pearl’s value. Flawless South Sea pearls are extremely rare, so small marks are expected and often do not detract from beauty or value.

Which blemishes should I avoid?

The blemishes to avoid are damaging ones: cracks and chips near the drill hole, usually caused during processing, which can grow over time.

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