Opal
Opal is brittle, heat sensitive, and breaks and scratches easily. Some varieties self- destruct through the loss of water. Even with these drawbacks, opal still is a premier gemstone.
OPAL - The Rainbow Gem
Opal: All The Colors in One Gem
Mysterious opals contain all the colors of the rainbow at once - the wonders of the skies - sparking rainbows, fireworks, and lightning - shifting and moving in their depths.
Opal Mineralogy & Formation
Chemically, opal is a mineraloid of amorphous hydrated (containing water molecules) silicon dioxide.
Opal
Opal, the most sought after gemstone reflects the lights of different wavelengths to give its unique visual appeal.
Opal Earrings
By: Nandita Ray
Summary: Opal can be fashioned into any item of jewelry. But the jewelry that really does the opal proud is the earring.
Opal
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Opal, an amorphous form of hydrous silica, was once held to be unlucky, but maybe this was only because the stone is rather fragile and tends to chip and scratch easily.
Opal Birthstones
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The famous Virgin Rainbow Black Opal is for sale here!
Modern Birthstone for October
Traditional Gem(s): Tourmaline
Modern Gem(s): Opal, Tourmaline
Alternate Birthstone for June ...
Opal
Chemical composition -- Amorphous silica with a high water content.
Color -- Colorless, white, black, gray, red, blue, orange, yellow.
Opal stories, superstitions and titbits
Roman Senator Nonius outlawed over Opal
Discussion on Opal Superstition in 16th century and how they
were reinstated by Queen Victoria ...
Opal love to be worn on the skin
Due to the differing percentage of water, Opals may easily become brittle. They always contain water - usually between 2 and 6 per cent, but sometimes even more.
Opal
The most famous opals of today are mined in Australia, which seems to have a nearly unlimited supply of the stunning, fiery gems. Opals are a silica gem that contain about 10-20 percent water.
OPAL
From the Latin opalus, meaning precious stone. Opal is the birthstone for October (also tourmaline). Unique among all gems because of its source of color (diffraction).
Opal may go by a number of names depending on the kind, some examples include hyalite (clear transparent samples 1-3 below), Cloudy or Milky (samples 4-6), clear or slightly cloudy (samples 7-9), fossilized opal (samples 10-11), ...
Opal
A beautiful opal is one of a kind: a natural artwork with a unique pattern of rainbow flashes of color unlike any other. It's as individual as your personality.
Opal is an amorphous hydrous silica. Some varieties display vivid colors in what gemologists refer to as play-of-color. White and black opal and some orange opal exhibit this phenomena.
Opal is classified in three primary types according to its body color supporting the play of colors. These types are black, white and transparent.
Transparent opal can have body colors such as colorless, yellow, brown, red or orange.
OPAL
Overview: Opal is a hydrated silica (SiO2.nH2O) with a water content within the mineral structure. Precious Opal contains 6% - 10% water and consists of small silica spheres arranged in an orderly three dimensional structure.
Opal: The Queen of Gems
Opal, the birthstone for October, is one of nature's most prized gems.
Opal: Breaking the Surface
Opal is probably one of the most misunderstood and myth-ified stones in the crystal realm. In my many years of working with and selling stones.
Opal Earrings
Home Gemstone Jewelry Opal Jewelry Opal Earrings
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The opal, spinel, chrysoberyl and glass silicates mineral species and their chemical composition and elements ...
Boulder Opal
Boulder opal is found sparsely distributed over a wide area of Australian ironstone or boulder country where the opal (silica mix) fills veins, cracks, cavities and crevices in ironstone boulders.
Boulder Opal Facts, Information and Description
See opal jewelry
The gemstone Opal is the official October birthstone as adopted by the American National Association of Jewelers in 1912. It is also the birth stone for the Zodiac sign of Libra.
Mexican opal commands its highest prices in Germany and in Japan where many of the Mexican stones are exported. Here in the US, it remains an excellent bargain, even in larger, custom cut pieces of finest color.
Opal has over one hundred variety and trade names, but the list of accepted or commonly used names is much shorter. The most important and most widely known opal is the precious opal.
Opal is a fascinating gemstone with an ancient history. Pliny the Elder gives an eloquent description of opal, comparing its many colors to that of the finest of ruby, emerald, sapphire, topaz, and amethyst.
OPAL:
A semi-precious gemstone with a speckled, multi-colored iridescent quality. Looking at an opal in different light or at different angles produces a rainbow-like effect of multiple colors. Opal is 5.5-6.5 on Mohs' scale of hardness.
Opal, with or without enhancement, should be treated with some care. Opal is softer than many other gemstones and should be stored carefully to avoid being scratched by other jewelry.
Opal is found filling veins or seams in rock as botryoidal masses in cavities or as stalagmitic forms. Other types of opals that are not considered gemstone varieties are found in an opaque green color, similar to that of chrysoprase.
Calibrated Opal
Specify size, shape and quality when ordering. Prices are subject to change without notice. Actual carat weight may vary from the average carat weight listed.
OpalQualityA ShapeSizeAvg. WeightPrice Each Cabochon, Round ...
Gemology -- Apatite to Boulder Opal
Andalusite:
Andalusite is named after Andalusia, which is one of 17 autonomous communities that constitute Spain.
Opal
"Nature's fireworks," the opal is a gemstone of hydrated silica. It is considered a mineraloid, rather than a full mineral, because its structure is not truly crystalline.
OPAL
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.
opal
Opal is a member of the quartz group. The name is from an Indian word meaning simply "stone".
Opal: An amorphous non-crystalline variety of silica which is softer and less dense than quartz.
Opal Triplet
An opal triplet is a manufactured stone that is composed of three thin layers that are glued together. A thin layer of opal is sandwiched between a layer of clear quartz and a layer of either obsidian or ironstone.
Opal
Most Opal is 50-65 million years old, dating back to the time of dinosaurs in the Cretaceous period.
Opal: Opals, known for their iridescent, luminous qualities, are adored by many. Opals contain a large amount of water and need to be cared for properly since experts warn of potential cracking.
Opal A semi-transparent irridescent stone composed of silicon and water. Said to enhance natural abilities, stimulate creativity, and inspire realization of inner potential.
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Opal - Function: noun
Etymology: Latin opalus, from Greek opallios, from Sanskrit upala stone, jewel ...
Opal: The color of the rainbow. The glow of the Northern Lights. The dramatic flash of summer lighting. All the lights of the evening sky are captured in the mysterious, shifting hues of Opal.
Opal - A non-crystalline, iridescent gemstone
Opaque - Not transparent; does not reflect light
Open work - A pattern of openings in an ornamental piece ...
Opal
Opal is the October birthstone as well as the accepted anniversary gemstone for the 14th year of marriage.
Opal: Unique among gems, the October birthstone, it exhibits an intense display of many microscopic colors, due to light interference from included silica spheres.
Opal Triplet
Opal Triplet is an opal doublet with an adhered layer of quartz on top.
Opaque
Opaque is the opposite of transparent. Light cannot pass through an opaque material.
Opal
Stone of inspiration. It enhances imagination and creativity and restores harmony on all levels. Physically, it purifies blood and relieves fatigue. It also helps during childbirth acting as a pain relief.
Opal: A non-crystalline, iridescent silica.
Oxidation: Metal blackened by a reaction with oxygen. The appearance is accomplished by chemical means.
Opal. Emotional balance. Helps stabilize mood swings.
Opal, Fire. Inspiration, enhances imagination and creativity. Helps one release inhibitions. Enhances memory.
Opal
Non-crystalline, iridescent silica.
Oxidation
(Antiqued) Darkening or other color changes of metal which is accelerated by humidity, especially salty air or the presence of acidic perspiration.
Opal
Australia's national gemstone
The opal is divided into three subcategories: precious, fire, and common
Precious Opals are known for their play-of-color and is full of colorful character.
Opal: An amorphous mineral. In great demand as a gemstone because of its unique display of multiple colors. Mostly found in Australia. October birthstone.
Oval cut: A brilliant style of cutting in which the outline is elliptical or oval.
Opal: An opaque, translucent or transparent gemstone, always cut en cabochon and sometimes carved. White, grey, yellowish to black body colour. In the finer qualities, opal displays all spectral colours in pin-fire, patchwork or flash patterns.
Opal - A gemstone with silica deposits and water content which has a spectral display of flashing colors that move and shift as the jewelry piece is moved. Much opal mining occurs in Australia.
opal
An irridescent semiprecious stone with inclusions of many colours that give it fire, and a high water content. Opals have a hardness of 5.5-6.5 on the Mohs Scale ...
OPAL
Birthstone for October
You are lucky to have one.
Long felt to bring bad luck to the recipient unless they were born in the month of October. This old "wive's tale" was dispelled for at least two generations.
Opal
A non crystalline, iridescent gemstone that can range in colour but are commonly found to be green or white. Birthstone of October. 5.5-6.5.
P ...
Opal
A mineral, an amorphous form of silica, SiO2 with some water of hydration, found in many varieties and colors, including a form that is milky white.
Opalescence ...
fire opal
Variety of opal which is yellow, orange, or red in color.
fish hook ...
BLACK OPAL
Black opals are a valuable type of precious opals with a dark ground color. They are luminous, iridescent, and frequently have inclusions of many colors ("fire").
Black Opal: A variety of precious opal that is almost opaque with a deep blue or dark grey or black background. It contains tiny irridescent opal spheres that cause a play of colors as a result of diffraction of light.
 See also: Stone, Gemstone, Color, Jewel, Diamond
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