Before plunging into the topic of cultured pearls, I want to remind you of the nomenclature rules set by the World Jewelry Confederation (CIBJO), which apply terms that
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The Mohs Hardiness Scale and Pearls
When it comes to measuring the hardness of minerals, the Mohs scale is an effective method. This scale was established in 1824 by a German mineralogist and geologist,
Chemical composition of a pearl
The deposition of calcium in biological systems is called ‘calcification’. Broadly speaking, pearls are composed of calcium carbonate, conchiolin and water. The calcium carbonate is represented in the
Keshi Pearl
The word ‘Keshi’ is a Japanese word meaning the smallest particle imaginable, e.g., a grain of sand, poppy seed, etc. In the Japanese pearl business, it is slang
The Process of Pearl Production
Introduction A pearl is the only gem that is formed inside a living organism. It is formed when cells lining the mantle tissue of a mollusk, produce and
Why do Oysters make Pearls?
Pearls are born from the pain of an oyster! It’s true! But there are other types of pearls out there, such as cultured pearls. How do they all
