Pearl JewelryWhere the name comes from: French perle, originally Latin perna - leg of mutton or ham shaped bivalve.
Where the stones come from: Organic origin made in Molluscs when an irritant is trapped inside the mantle. layers of calcium carbonate nacre are laid down at the molecular level to give a lustrous result.
Chemistry: Calcium carbonate, CaCO3
Colors: Silver-white with shadings of off-white including yellows, pink, peach and orange.
...and another thing: For thousands of years the only way of finding pearls was to open countless oysters, then in the early 1900's three Japanese men discovered how to culture pearls.