Whether wild or cultured, gem quality pearls are almost always
nacre ous and iridescent , as is the interior of the shell that produces
Kaynak: Pearlfrom
nacre, or mother of pearl , due to its iridescence), are cloud s in the winter polar stratosphere at altitudes of 15000 | 25000 | m
Kaynak: Polar stratospheric cloudPearlescent or
nacre ous coating s or pigments possess optical effects that not only serve decorative purposes (such as cosmetics,
Kaynak: Pearlescent coatingA suncatcher or light catcher is a small, reflective glass or
nacre piece that is hung indoors at windows to "catch the light " from a
Kaynak: SuncatcherThe orangenacre mucket or orange-
nacre mucket, scientific name Hamiota perovalis, is a species of freshwater mussel , an aquatic bivalve
Kaynak: Orangenacre mucketPearl Maxima is one of the largest true pearl s or
nacre ous pearls in the world . This irregular shaped pearl has a weight of 2385 grain
Kaynak: Pearl MaximaThey have a strong inner shell layer composed of
nacre , also known as "mother of pearl ". Pearl oysters are not closely related to either
Kaynak: Pearl oysterThe thick inner layer of the shell is composed of
nacre or mother-of-pearl, which in many species is highly iridescent , giving rise to a
Kaynak: AbaloneAll have in common a larval stage that is temporarily parasitic on fish,
nacre ous shells, high in organic matter, that may crack upon
Kaynak: UnionoidaThe interior of the shell of Margaritifera margaritifera has thick
nacre (the inner mother of pearl layer of the shell). This species is
Kaynak: Freshwater pearl musselThe external colour of the shell is often dark blue, blackish, or brown, while the interior is silvery and somewhat
nacre ous.
Kaynak: MusselThey have
nacre as the inner shell layer. The families within this superfamily include the Trochidae . Note that this taxon is not the same
Kaynak: Trochoidea (superfamily)Some beads are coated with a pearlescent substance in order to imitate the natural iridescence of
nacre or mother of pearl.
Kaynak: Imitation pearl