The value of the pearl is based on the brilliancy of the nacre, the size, and the form.
The specimens collected by Mr. Schoolcraft, vary much in the color of the nacre.
The nacre of the columella and within the aperture is bluish-green, and the operculum is rich olive.
If any one ask: Has not the self-conscious entity that underlies the illusion about nacre, &c., knowledge only for its nature?
Nacre is the hard and brilliant substance with which the valves of certain shells are lined in the interior.
Most of the bivalves are supplied with nacre; some of them even yield a blue, or blue and violet pigment.
The Gold-mouthed Turbo is so named from its nacre being of a rich golden yellow.
The story is better known, however, by Anatole France's version, included in his "tui de Nacre" .
Thin rind of a moon hung low in the west, a cold glow of nacre.
The pearls are polished by shaking them together in a bag with nacre powder.