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how to select your pearl



Pearls of Australia jewellery features only clean to moderately blemished pearls. Lightly and moderately blemished pearls can be matched as strands. Regardless of the type of pearl, if the pearl has a smooth, clean surface it will be valued higher than those with multiple inclusions.

Our grading system categorises Akoya Pearls Surface as:

Our grading system categorises South Sea Pearls Surface as:


Pearls of Australia jewellery exclusively features pearls of good to excellent lustre. It is observed below the pearl surface and expressed through the sharpness of the image it reflects. Lustre describes the way light reflection off the surface of the pearl, and the sharper the lustre – the more valuable the pearl.

Our grading system for both South Sea & Akoya categorises Lustre as:


Our grading system for both South Sea & Akoya expresses Size as millimetres (mm) or momme (3.75g) – which is the Japanese weight measure for pearls and commonly used for the international market. In terms of both Akoya and South Sea Pearls – the larger the size, the more valuable the pearl. This is because large, perfectly symmetrical pearls are rare as they take many years to form. 

South Sea Pearl Sizes

South Sea Pearl size usually range from 8 to over 20mm. Australian South Sea Pearls average size is bigger than their Indonesian and Philippines counterparts. Relative proportion and balance come into play here rather than size alone.

Akoya Pearl Sizes

Akoya Pearl size ranges from 4mm – 10mm with the average sitting around 6.5-8mm.


Pearls of Australia jewellery features all shapes of pearls however there is generally a larger diversity in shape from South Sea Pearls than Akoya Pearls. The rarest type of pearl is a truly round pearl – and therefore it is regarded as the most valuable. 

Our grading system for both South Sea & Akoya categorises Shape as:


Pearls of Australia jewellery only features the natural colours of pearls we grow. Value is weighted according to the depth, saturation and rarity of the colour. 

Our grading system for both South Sea & Akoya categorises Colour as:

Most Australian South Sea pearls sit on the Silver – White Spectrum whilst Australian Akoya will produce the full range above.

Other pearl types and rare finds can come in peacock, amber or purple natural shades and more.

For further information & special requests, please email us at [email protected]

If you want to learn more about our pearl jewellery from one of our incredibly knowledgeable and friendly customer care team – book a private in-person or virtual consultation today!