The Capital of China is, by far, the 3rd most populated city in the world. Having population of 21.5 million (21,516,000), with a population density of 1,300/km2, it is countryâs center for education, culture and politics. Talking about politics, this city is the hub of politics in the country for, as long as, eight centuries.
A pearl is an organic mineral mixture formed with the soft living tissue of a shelled mollusk.Chemically pearls are made of calcium carbonate, either the mineral aragonite or a mixture of aragonite and calcite, sometimes also with minor vaterite.Pearls are used as gemstones, but are not regarded as true minerals due to their organic origin. pearl is an organic mineral mixture formed with the soft living tissue of a shelled mollusk.
Azurite is a soft stone, named for its deep âazure blueâ color. It is a copper carbonate mineral found in the upper oxidized portions of copper ore formed in masses, nodules, tabular or prismatic crystals, sometimes with a vitreous luster.zurite which is blue in color is one of the natural birthstones of those born as the world awaits the vernal equinox and spring (February 19 - March 19). This is a time when new life is about to burst forth, a time of faith and trust.