Pearl Chart


We identify and classify pearls in three categories: Size, Shape and Surface:


The size of the pearl greatly depends on the type of pearl. Freshwater pearls range in size from about 3.0-7.0mm, Akoya pearls range from about 6.0-8.5mm, and Tahitian pearls can reach sizes as large as 13mm.

South Sea pearls are the largest and rarest among all the other types of pearls (such as freshwater, akoya and tahitian pearls). They range from 8mm to 20mm, averaging around 13mm.


Generally, South Sea pearls come in three main shapes: round (with near round variation), symmetrical (such as oval) and the beautiful baroque shape.

Industry standard is to offer round pearls but there is a growing demand for symmetrical and baroque pearls because of their modern artistic values and the sense of identity our customers get from them.


Every South Sea pearl is unique and having a few imperfections is a true display of its natural growth. As an oyster creates a pearl, the layers of nacre do not always adhere smoothly. Sometimes spots and bubbles can appear in the layering process. Pearls with the smoothest surfaces are the highest-quality, most sought-after pearls. 

Here in Polier, we categorise them into flawless (no spots), lightly spotted (one to ten spots) and spotted (more than ten spots).

All of Polier Pearls jewellery are genuine and come in the highest quality. Check yours here.