When debris gets trapped in between the shells ... white to black — including blue, green, orange, pink, and yellow. The main ...

Uma Thurman's dress had over 3,000 white ... shell of a mollusk like an oyster or a mussel. To protect itself from the invader, the mollusk starts to coat the debris with nacre, or mother-of-pearl ...

Oysters are bivalves that means their shell is composed of two valves connected by an elastic ligament. This ligament keeps the valves open, allowing the oyster ... can be white, black, grey ...

The oyster or mussel slowly secretes layers of aragonite and conchiolin, materials that also make up its shell. This creates a material called nacre, also known as mother-of-pearl, which encases the ...