Iridescent Gems
Due to their internal structure, a number of gem varieties show a surface or interior display of colors which are not part of the gems themselves, but rather created by the behavior of the light that enters them.
iridescent glass
Glass mixed with arsenic to create a rainbow or pearly luster. The arsenic is chemically bonded with the glass and presents no health hazard to the wearer at all.
jade ...
Iridescent - An interplay of various rainbow-like colours
Jade - An ornamental gemstone, typically greenish in colour
Jadeite - A variety of jade which is rarer than other kinds of nephrite.
Iridescent
A gem displaying rainbow-like colors is called iridescent. Iridescence is caused by the reflection of light from the jewel. Mother of Pearl is one example of iridescence used in jewelry.
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IRIDESCENT
An iridescent object displays many lustrous, changing colors. Iridescence is caused by the reflection of light from the jewel.
IRIDIUM ...
Iridescent: A display of lustrous rainbow-like colors. The colors seen in an oil slick or mother of pearl are good examples of iridescence. Synonymous with "Pearlescent".
Iridescent
Iridescent refers to the many colors that are reflected off a gemstone.
Iridium
Iridium is a metal that is similar to platinum and are commonly alloyed together in order to decrease the cost of a piece of jewelry.
Iridescent
A term usually applied to crystals or rhinestones that sparkle with a rainbow of colors. Pearls, shells, and other components can also have this changing luster, similar to the changing color seen on an oil slick.
Iridescent Glass - glassware with a special coating which, when struck by light, reflects the colors of the rainbow.
Milk Glass - white opaque glass, most common in reproduction of early decorative pieces.
Iridescent
A permanent "rainbow" finish, which is applied while the bead is hot. Back to Index ...
IRIDESCENT: To give a high luster to glass or other man-made materials. Some gems and gemstones have a natural iridescent quality peculiar to some stones.
Iridescent - A rainbow range of colors reflected from the surface of a gemstone.
Iridescent
An iridescent material displays many lustrous, changing colors caused by the reflection of light due to inclusions in gemstones.
Jade ...
Iridescent mother-of-pearl, one of the most beautiful decorative materials, repays the small amount of time and effort that is needed to keep it looking its best ...
Iridescent colors found in "mystic topaz" can be added to natural topaz by applying a thin layer of titanium oxide vapor (vapor color-coating) to the outside of the stone, but this vapor color-coating treatment is not permanent, ...
IRIDESCENT An irregular patter of colors reflected from the surface of a gemstone. Common in Pearls caused by light reflecting and refracting off the many layers of nacre secreted over each other by a mollusk to create a pearl.
Iridescent
An interplay of various colours
Jade
An ornamental gemstone, typically greenish in colour.
iridescent
An interplay of various rainbow-like colors.
j hoop
An earring design where the hoop is not totally circular, but elongated in a manner similar to the letter "j".
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Iridescent
A shimmery effect best known in pearls and opals in which different colors are visible depending on how the light strikes the material.
Irradiated Diamonds ...
(iridescent blue-green-silver)
15. Lapis (dark blue with gold)
16. Malachite (green with striped patterns) ...
The iridescent interior shell layer from a pearl oyster
Mounting
The frame or setting that holds a gemstone in place ...
True iridescent pearls, the most desirable pearls, are produced by two groups of molluscan bivalves or clams. One family lives in the sea: the pearl oysters.
Hard, iridescent substance that forms on the inside layer of a pearl-bearing mollusk.
nacre
A shiny, iridescent substance made from the lining of mollusk shells or fish scales.
A shiny, iridescent substance secreted by a mollusk in response to a foreign substance such as a grain of sand or an inserted bead. Layers of nacre form a pearl.
2 faceted iridescent dark red beads (6 mm in diameter)
2 iridescent dark red beads (4 mm in diameter)
2 cut golden beads (4 mm in diameter)
4 golden crystals
Short golden bugle,
Iridescent dark red beads (small diameter) ...
Aqua Aura: Iridescent bluish to clear stone that is made by coating clear quartz with a fine layer of gold, aluminum or copper.
Aquamarine: A light sky blue to sea green gem that is a member of the Beryl family that also includes emeralds.
The smooth iridescent interior lining of the shells of certain mollusks
N
Navette Cut ...
Abalone Iridescent pieces of shell from the abalone sea mollusk.
Acrylic A glassy plastic-like material which can be molded or cast or used in paints and coatings.
The pearl's iridescent luminosity has bewitched men and women alike for thousands of years.
NACRE - The iridescent substance containing aragonite and calcite crystals. This is an important outside layering material and a constituent of a pearl and cultured pearls. The thicker the nacre the longer the pearl has been allowed to grow.
Orient - The iridescent play-of-color that gives pearls their deep inner glow.
Oval - A cut shape for gemstones.
Overtone - The hint of secondary color found in pearls. Typically pink, green, blue and silver.
nacre The iridescent inside of a mollusk shell, which is used as an ornament. Not to be confused with pearl. native Composed of only a single element; not combined with any other elements.
Appearance
Iridescent, and opalescent with a wide range of internal colors.
Enhancements
Opal is rarely impregnated with colorless oil, wax and resins.
orient The iridescent effect visible in finer quality pearls; also called overtone.
overcolor A stone with a hue that is overly dark in tone, usually above eighty-five percent.
overtone See orient.
Amazonite is an iridescent stone that varies in color from pale green to blue green. Different shades of these colors can show up in the same stone. Amazonite is part of the Microcline class of the Feldspar group.
The distinctive iridescent colors seen on the surface of a pearl.
Oriental pearl
Natural pearls found in the Persian Gulf, Red Sea, or Gulf of Myanmar. Also, can be referred to a pearl occurring naturally in saltwater.
Nacre - The iridescent substance secreted by a mollusk during the formation of a pearl that consists of layers of aragonite and calcite crystals.
The shimmering, iridescent play-of-colour seen on or just below the surface of the pearl.
Oriental Pearl
A natural pearl.
Nacre: A shiny, iridescent substance made from the lining of mollusk shells or fish scales.
Nephrite: A hard type of jade with colors ranging from white to dark green and shades of gray or brown to black.
Luster: iridescent or pearly
Hardness: 3
Specific gravity: 2.71
Comments: some are fluorescent in UV, red, yellow pink blue
Caledonite ... Cu2Pb5(SO4)3(CO3)(OH)6... carbonate sulfate of lead and copper
Color: light blue to light blue green ...
Distinctive types of agate include Moss Agate, known for its mossy green striping, and Iris Agate, with its lustrous, iridescent sheen. The porous stone has a soft, waxy, translucent appearance and a moderate 6.5 to 7 rating on the Mohs Scale.
AmazoniteAmazonite is an iridescent stone that ranges in color from green to blue-green. AmberA translucent fossilized tree resin (from conifers). American RubyAn American ruby is actually a pyrope garnet (and not a ruby at all).
Light reflecting from these overlapping layers produces a characteristic iridescent luster, also known as the "orient of pearl." An irritant is introduced to initiate the formation of a cultured pearl.
To protect itself, the oyster coats an intruding object or grain of sand with nacre, a crystalline substance that builds up over time, resulting in a shimmering, iridescent creation. The culturing process developed by man mimics nature.
Spring 1954, The Structure and Optical Behavior of Iridescent Opal, p. 21, 6pp.
Spring 1955, Lattice Structure in Precious Opal, by Leechman, p. 154, 2pp.
Fall 1959, Treated black opal, p. 343, 1p.
Fall 1962, Treated black opal, p.
This brilliantly iridescent material is regarded as the world's most beautiful form of labradorite (a variety of plagioclase feldspar). Specifically, "spectrolite" is a trade name for high-grade labradorite found only in Finland.
Pearls with nacre too thin or opaque tend to look chalky rather than iridescent. Nacre thickness of 0.5 mm or greater is needed for a good luster. Prices are higher for thicker nacre.
Opals are semi-precious stones that are luminous and iridescent, frequently with inclusions of many colors ("fire"). Opal is a mineral composed of noncrystalline (amorphous) silica (and some water) and is a species of quartz.
Light that is reflected from these overlapping layers produces a characteristic iridescent luster. This process of building a solid pearl can take up to seven or eight years.
It is a brittle metal with a pinkish hue and an iridescent tarnish. Among the heavy metals, bismuth is unusual in that its toxicity is much lower than that of its neighbors in the periodic table such as lead, thallium and antimony.
Gems and minerals like topaz, citrine, peridot, onyx, agate, opal, turquoise, beryl, lapis, tourmaline and malachite are iridescent, lustrous and beautiful, their rainbow hues a complement to your fiancie's personality.
Abalone The colorful, pearly iridescent inner shell of the mollusk. Characteristically of a dark green color, it is also the source of the many-colored mother of pearl.
Schiller (from the German term for play of colors or glitter) is an iridescent or bronze-like luster occuring in some minerals (it is also referred to as labradorescence when it occurs in feldspars).
Aurora Borealis Named for the northern lights, aurora borealis is a term for crystal stones that have a highly iridescent surface.
Abalone cabochons come from the colorful iridescent inner layer shell of the abalone sea snail
Abalone is a source of mother-of-pearl
The Paua-shell is part of the abalone family, but has deeper colors of blue, green, and purple.
They are luminous, iridescent, and frequently have inclusions of many colors ("fire"). Opal is a mineral composed of silica (and some water) and is a species of quartz. The rainbow-like iridescence is caused by tiny crystals of cristobalite.
Colors intensify and have an iridescent effect. Gold's become brighter, blues more saturated, and the purples pop. Ammonia, in my opinion, adds an additional element of wonder because it seems to make the LOS solution more "sensitive.
Mother of Pearl is the name given to the iridescent coating on the inside of mollusk shells. When an object gets inside the shell of a mollusk, it will protect itself by coating the invading object with the same material it uses to coat pearls.
This phenomenon occurs due to an internal diffraction of light which disperses a spectrum of iridescent colors.
A beautiful iridescent bluish to clear stone, made by coating clear quartz with a fine layer of gold, aluminium or copper using a process called called vapour deposition.
 See also: Color, Stone, Jewel, Jewelry, Gemstone
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