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 1-Luminous: The luster is a combination of bright light outside and a deep-seated. The luster of a pearl of good quality should be bright and not dull. You should be able to see your own reflection clearly on the surface of a pearl.Any pearl that appears too white, dull or chalky indicates poor quality.

2-SURFACE: This criterion takes into account the absence of stains, dents or cracks that distort the homogeneity of the surface of a pearl. The more the surface is smooth over the pearl is quality.

3-FORM: Since cultured pearls are developed by oysters that are living beings, it is rare to find perfectly round pearls. However, over the pearl is round, the more it is sought.The baroque pearls are asymmetrical in their forms, they can be bright and attractive and are often less expensive than round pearls well.

4-COLOR: Cultured pearls offer a variety of colors ranging from pearly white to white to reflect very slightly pink to almost black, with multiple variants of intermediate shades.The color choice really depends on personal taste, his complexion, her wardrobe and other jewelry in her possession.

5-SIZE: Cultured pearls are measured by their diameter in millimeters. It may be less than one millimeter called “grain” and up to twenty millimeters for South Sea pearls. Over the pearl is, the more it is worth.However, these are the pearls of 7 to 7.5 mm are most common on the market.

6 – MOTHER OF PEARL: The Mother of Pearl is the substance that the mollusk secretes to protect its sensitive flesh against irritants such as shell fragments or implanted beads. It’s the same iridescent material that constitutes the inner surface of oyster shells, also called mother-of-pearl.In general, the more mother of pearl is thicker, the pearl is high quality.