The Formation of a Pearl | Secret Life of Pearls


Audición — Nivel Avanzado
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  1. The   is as wild today as it was when Europeans settled the continent over 200 years ago.

  2. Australia's South Sea pearl oyster is also known as the silver   oyster.

  3. It has the   to produce one of the most valuable gems known to mankind.

  4. The South Sea pearl oyster that lives here produces the cream of the   .

  5. It's a   creature that can grow to around one foot.

  6. The pearls it creates are the largest most   of all.

  7. Some tiny organism invades the creature and   the cells in the mantle.

  8. The oyster begins to   a smooth crystalline substance known as nacre.

  9. It takes several years for thousands of   of nacre to build up and create a smooth iridiiscent gem.

  10. A pearl of value is found in less than 1 in   wild pearl oysters.


Practica tus habilidades de escritura debatiendo las siguientes cuestiones

  1. Why is Australia's South Sea pearl oyster expensive?

  2. Do you like pearls? if yes, where do you buy them?

  3. What are some of the rarest gems that your counrty has?


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