Is it normal to have flaw on the pearl?
In terms of physical structure, the shape of the pearl is reflected by the accumulation of calcium carbonate crystals and conchiolin on the surface of the pearl. In an ideal state, the surface should be smooth and clean, but in fact, due to the complex and varied environment and the health of the oyster, the surface of the pearl tends to deviate from the ideal state, and some defects occur.
If the temperature and ion concentration in the water do not change much, the crystal growth is stable, the structure is clear, and the surface of the pearl is relatively smooth. Otherwise the crystal is prone to mutation and defects.
Water quality, water temperature, ion concentration are unlikely to remain absolutely consistent, so that ideal conditions are difficult to exist, therefore, pearls that are truly smooth and flawless are rare.
Therefore, flawless pearls become very expensive. Most cultured pearls have more or less flaw on their surfaces.
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