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Tridacna clams can produce large white pearls with an undulating, porcelain-like surface, [16] which may be described as "non-nacreous pearls". [ citation needed ] The " Pearl of Lao Tzu ", also known as the "Pearl of Allah", is the world's largest pearl weighing 6.4 kilogrammes; it was said to have been found inside a Tridacna gigas by a ...
Mantle of giant clam with light-sensitive spots, which detect danger and cause the clam to close. Tridacna gigas, the giant clam, is the best-known species of the giant clam genus Tridacna. Giant clams are the largest living bivalve mollusks. Several other species of "giant clam" in the genus Tridacna are often misidentified as Tridacna gigas.
The freshwater pearl mussel (Margaritifera margaritifera) is an endangered species of freshwater mussel, an aquatic bivalve mollusc in the family Margaritiferidae.. Although the name "freshwater pearl mussel" is often used for this species, other freshwater mussel species (e.g. Margaritifera auricularia) can also create pearls and some can also be used as a source of mother of pearl.
Because it did not grow in a pearl oyster it is not pearly; instead the surface is glossy like porcelain. Other pearls from giant clams are known to exist, but this is a particularly large one weighing 14 lb (6.4 kg). [28] The largest known pearl (also from a giant clam) is the Pearl of Puerto, also found in the Philippines by a fisherman from ...
The Giga Pearl was formed by a Tridacna gigas which is the largest extant bivalve. These giant clams can grow up to approximately four and a half feet (1.4 m) wide and can weigh up to approximately 550 pounds (250 kg). [7] They are found in the eastern Indian Ocean and west Pacific Ocean, from Thailand and western Australia eastward to ...
Not only do giant clams contain several sub-species, but they live in various regions with heavy overlap. This makes classification difficult. “In terms of species’ endangered status ...
The Pearl of Lao Tzu was once considered the world's largest known pearl. The pearl was found by a Filipino diver in the Palawan sea, which surrounds the island of Palawan in the Philippines. It is not considered a gemstone pearl, but is instead known as a "clam pearl" or "Tridacna pearl" from a giant clam. It measures 24 centimeters in ...
Tridacna squamosa, known commonly as the fluted giant clam and scaly clam, is a species of bivalve in the family Cardiidae. [ 1 ] [ 3 ] It is one of a number of large clam species native to the shallow coral reefs of the South Pacific and Indian Oceans .