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SORTING PEARLS

There are many different steps involved with the sorting of pearls. Firstly, the pearls are sorted according to whether they can be used for the cultured pearl industry or not. Those which can be, are categorised into three sections:
a) unmarked pearls,
b) pearls with one major blemish
c) pearls with more than one major blemish. Pearls of this description are used specifically for necklets.

A sieve or an object similar to the one on the right is then used to seperate different pearl sizes.Pearls are then graded based on the following considerations:
1. Thickness of nacre: This is determined by the length of time in which the pearl has been in the oyster. The thicker the nacre, the more expensive the pearl will become.

 


Photo courtesy of Paspaley Pearls, Australia

2. Lustre: The lustre of a pearl is concerned with the effect of reflection and refraction from the inner layers of skin as well as the surface.

Lustre

 

3. Colour: Australian south sea pearls of which are mainly produced by the rare, Pinctada Maxima oyster, show an incredible and brilliant display of almost every colour of the rainbow. The most popular pearl colours are white, silver, and cream, as they are the most universally appreciated colour. Other exotic coloured pearls include rose, gold, peach, champagne, and lavender.


Photo courtesy of Paspaley Pearls, Australia

Colour

4. Shape: There are many different shapes of pearls. The most frequently found pearl types are round, half round, egg, pear, button, girdled, baroque, and semi baroque; the most rarest and sought after being round and teardrop shaped pearls.

Shape

5. Surface Perfection: The classification of the type of surface of a pearl is as follows: Exceptional skin, fine skin, or marked skin.

Surface Perfection

6: Size: Australian pearls dominate the pearling industry in size and quality. The average size for Australian pearls is 10-14 mm, although some extremely rare pearls have reached an incredibly large, 20mm in diameter. the largest abalone pearl

Varying sizes

Follow the links for a guide to determining the Quality of the pearl or the Variety of pearls.

Pearl

Another important aspect of pearling deals with the process of cleaning pearls in order to enhance their quality and appearance.
Some pearls tend to have small blemishes or scratches. This can be amended by removing layer upon layer of nacre, until finally reaching a layer free from blemishes. However, there is a high risk with doing so, as the pearl cleaner may remove too much, thus decreasing the value of the original pearl. It is a fifty, fifty gamble in which the owner must take the risk of gaining a more valuable pearl or losing everything altogether. The world's most famous pearl cleaner, T.B.Ellies, whom lived in Broome, met pearl dealers from all over the world and is said to have cleaned over 2 million dollars worth of pearls.

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