Qualities of Pearls
The 4 S's of pearls
The four key characteristics of pearls which determine their quality.
This is also known as lustre and is the amount of light that the pearl reflects. The better the nacre quality of the pearl the more brilliant the shine and reflection.
Pearls come in a variety of shapes such as button, tear drop and baroque shapes. Perfectly round pearls are the rarest and most valuable.
As pearls are formed organically, they naturally have blemishes and marks. These blemishes are caused when a drifting particle enters a mollusc and brushes against the pearl as it forms. Pearls with fewer blemishes and marks are of higher quality and more valuable.
The size of the pearls are a matter of preference, they do not affect the quality of the pearls but the price of the pearls increases with size. This is because large pearls are rarer and more difficult to cultivate. Pearls are measured in diameter increments of millimetres (mm).