This composite material is called mother-of-pearl or nacre. The crystalline structure of nacre reflects light in a unique way, giving nacreous pearls their high lustre. These amazing creatures use the same substance to build their shell homes. 'Cultured Pearls' are grown inside a mollusc using nuclei (usually from mollusk remnants) hand-seeded by harvesters and grown in protected water sources and farms.
Gemstone is durable and rare
Thanks to Diamonds, most people have at least a fleeting recognition of the 4Cs (color, cut, clarity and carat weight). The 4Cs are a good way to describe beauty in gemstones; they give us an easy value guide to what initially seems like very complicated territory. While the 4Cs are a strong foundation, there are other factors that also need to be considered when purchasing gemstones. We'll cover these below, including their relative importance and interrelationship to a gemstone's final value.