Pearl or parasite enters a bivalve mollusk and settles inside the shell. The mollusk, irritated by the intruder, forms a pearl sac of external mantle tissue cells and secretes the calcium carbonate and conchiolin to cover the irritant. This secretion process is repeated many times, thus producing a pearl. Natural pearls come in many shapes, with perfectly round ones being comparatively rare. Typically, the build-up of a natural pearl consists of a brown central zone formed by columnar calcium carbonate (usually calcite, sometimes columnar aragonite) and a yellowish to white outer zone consisting of nacre (tabular aragonite). In a pearl cross-section
The Pearl of Love sarcophagus" that causes it to, "lay incongruously in the great vista of the Pearl of Love." He returns with "an architect and two master craftsmen and a small retinue" and then, after long, silent deliberation—"no one knew the thoughts that passed through his mind"—he points at his wife’s sarcophagus and says, "Take that thing away." "The Pearl of Love" was first published in "The Strand Magazine" in December 1925. In 1927 Wells told the "Sunday Express" that "The Pearl of Love" and "The Country of the Blind" were his favorites among the stories he had written. The Pearl of Love