The name opal evolved from the Roman word "opalus" which traces its roots from the Greek's "opallios " meaning to see a change of color. This Greek word is likewise a revision of the ancient Indian Sanskrit's "upala " which means precious stone. The development of this gemstone started millions of years ago when a mixture of silica and water flowed into cracks and holes in the ground. Over time it hardened and solidified to turn into opal. Some opals are hydrophanes meaning that they can soak up water like a sponge.
When hydrated the stone becomes more translucent and the play of colors more defined. Oregon blue opal has an incredible soft translucent hue. Unlike other opals which diffuse more light and show more dramatic opal fire Oregon blue opal's beauty is found more in its depth of the color and subtle opalescent glow.
In terms of appearance it is the most distinct of the opal stones found to date. This gem also known as denim opal can be found inside of thunder eggs. Thunder eggs are nodule-like geological structures similar to geodes which form within rhyolitic lava flows.
According to Native American legend when the Thunder Spirits living in the highest recesses of snowcapped Mount Hood and Mount Jefferson became angry with one another they would hurl masses of these spherical rocks at each other creating violent thunder and lightning storms. The hostile gods obtained these weapons by stealing eggs from the thunderbirds' nests. These rocks became opal yielding thunder eggs. He breathed life into the stones he stepped on and they started sparkling in all the colors of the rainbow.
Based on this tradition opals were believed to protect against lightning strikes and bad elements. Her five daughters and immediate circle received gifts containing this fine gemstone.
It became a much coveted piece since the Royal Court of Britain was considered the model for fashion at the time. Opals can be found in various places but this unique blue colored beauty can only be found in the mines of Oregon. Oregon blue opal was discovered in in the opal-rich area of Richardson's Rock Ranch. Richardson's is located 11 miles north of Madras Oregon. Oregon Blue Opal Gemstone. The opal is celebrated for its spectacle of rainbow-like hues which vary with lighting or angle of observation.
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Items in search results. Search refinements Categories. Fine Jewellery Loose Beads Fashion Jewellery 4. Handcrafted, Artisan Jewellery 3. Collectibles Everything Else 4. Books 1. Format see all Format. All Listings filter applied. Buy It Now. Shape see all Shape. Natural Tumbled 3. Not Specified Featured Refinements see all Featured Refinements. Rough Crystal Reiki Crystal 4.
Polished Stone 2. Polish Jasper 1. Condition see all Condition. New Used 1. Please provide a valid price range. Item Location see all Item Location.To be sure, there have been price increases, but when compared with aqua opal, red, and the pastels, it has been a laggard. This is a 70 percent increase.
Not too shabby. It is only when compared with the aqua opals, pastels, and reds that it appears so small. There have been some dramatic exceptions where one-of-a-kind peach opal rarities are concerned. While none of the few known Fruit Salad peach opal punch sets have sold. The prices on these pieces have not kept pace with the pastels or any of the other opalescent edge colors.
Why is this so? I feel it is basically a matter of supply and demand. Peach opal was made in volume and is certainly much more available than aqua opal or the very limited blue opal, amethyst opal, red opal, or lime green opal. Coupled with this is the fact that many collectors find peach opal less appealing from an aesthetic point of view. Some will also argue that it comes down to the fact Northwood made most of the aqua opal pieces, while Dugan-Diamond made the great bulk of the peach opal.
They feel the Northwood patterns are simply more beautiful and desirable. For sheer beauty a peach opal display on a dark background is hard to beat. There are very few patterns that were made in both peach opal and aqua opal.
Don’t Write Off Peach Opal
Both colors are very rare in this piece. Due to the superb research efforts of Bill Heacock, we now know that Dugan-Diamond made some 90 percent of all the peach opal. To my knowledge, Imperial and Millersburg made none. It is also doubtful if any was made by Northwood. The signed peach opal Nautilus is believed to have been made by Dugan-Diamond from an old Northwood mold left behind when the plant was sold in Dugan-Diamond did not bother to remove the signature.
One signed peach opal Beaded Cable rose bowl has also turned up. This piece could also have been made from a carryover mold as we know that this piece, like Nautilus, was made earlier by Northwood in custard.
The peach opal Grape and Cable bonbon is also a one-of-a-kind.
It is unsigned, but so are a number of these pieces in other carnival colors. It is quite likely that it, too, was made by Dugan or Diamond. This piece was made by Northwood in milk glass with marigold iridescence, but this is not to be confused with true peach opal. At this point it would appear that Fenton and Westmoreland were the only companies other than Dugan-Diamond to produce any peach opal, and their production was minimal.
Fenton, as previously mentioned, used this color for Dragon and Lotus, Blackberry Banded hat shapes, and a single Orange Tree plate is known. A one-of-a-kind rare Orange Tree hatpin holder is also known. It is in the Loescher collection in Beloit, Wisconsin, unless George has needed some money very badly. A rare Stag and Holly bowl has also been confirmed recently.
It is often difficult to know which production to attribute to Dugan and which to Diamond since, like Northwood before them, they each operated from the same factory site at Indiana, Pennsylvania.The word opals typically conjure images of black or white stones, sparkling with a captivating play of color as fire dances across its surface.
Many are stunned to learn, however, that opals are found in an amazing variety of colors! Oregon peach opal represents one of these rare and unusual color varieties. The pink material is swirled with peachy tones evocative of freshly scooped sherbet.
This peach opal is what's known as a 'common opal. It's simply a term to differentiate opals that possess the characteristic play of color from those that don't.
Instead, these stones possess a captivating and intense body color, making them beautiful in their own right. Stones are not treated in any known way. These opals are opaque and are shaped into cabochons. Occasionally, the rare specimen will be faceted. Peach opal ranks 5. As with all similar stones, Oregon peach opals are vulnerable to high heat and chemicals, and jewelry should not be exposed to either.
They can be cleaned with warm, soapy water. Opal gemstones require the moisture found in air to stay in good shape. Avoid storing them in airtight containers. In fact, opals have a history of being connected to this month as a birthstone since at least the early s.
American mineralogist G. Kunz once remarked how opal exemplifies October and displays the contrasting colors of autumn in its possible color combinations. Peach opal contributes to this tradition, the gem showing color like a changing leaf in fall. Opal, however, is not associated with any star sign. You may have even heard the adage suggesting only to wear an opal if it's your birthstone. In antiquity, however, opals were one of the most coveted stones around. In ancient beliefs, gemstones were identified by their color, and opals, with their play of color, were frequently considered to possess the power of all other gems.
So, what changed?Own the spotlight with this spectacular Oregon peach opal ring. The cluster ring is infused with amazing style and brilliance that add to your charming personality. Grace your look for the evening party or romantic date with this fabulous piece of jewel. The metal is durable and hypoallergenic. Milgrain details and visible prongs add depth to the design.
The broad shank ring comes with finished under gallery. Crafted with perfection, the jewel displays excellent finish and shine. The pink material is swirled with peachy tones evocative of freshly scooped sherbet.
Found only in the U. Opal is believed to enhance self worth, confidence and self-esteem, and understand your full potential. Never soak or immerse your opal jewelry.
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Ask A Question. Review submitted successfully. Your Question has been posted successfully.Because of its amorphous character, it is classed as a mineraloidunlike crystalline forms of silica, which are classed as minerals. It is deposited at a relatively low temperature and may occur in the fissures of almost any kind of rockbeing most commonly found with limonitesandstonerhyolitemarland basalt. There are two broad classes of opal: precious and common. Precious opal displays play-of-color iridescencecommon opal does not.
Depending on the conditions in which it formed, opal may be transparent, translucent or opaque and the background color may be white, black or nearly any color of the visual spectrum. Black opal is considered to be the rarest, whereas white, gray and green are the most common.
Precious opal shows a variable interplay of internal colors, and though it is a mineraloid, it has an internal structure.Opal creek trail, OR
It was shown by J. Sanders in the mids   that these ordered silica spheres produce the internal colors by causing the interference and diffraction of light passing through the microstructure of the opal.
Where the distance between the regularly packed planes of spheres is around half the wavelength of a component of visible lightthe light of that wavelength may be subject to diffraction from the grating created by the stacked planes.
The colors that are observed are determined by the spacing between the planes and the orientation of planes with respect to the incident light. The process can be described by Bragg's law of diffraction. Visible light cannot pass through large thicknesses of the opal. This is the basis of the optical band gap in a photonic crystal. The notion that opals are photonic crystals for visible light was expressed in by Vasily Astratov 's group.
The term opalescence is commonly used to describe this unique and beautiful phenomenon, which in gemology is termed play of color. In gemology, opalescence is applied to the hazy-milky- turbid sheen of common or potch opal which does not show a play of color. Opalescence is a form of adularescence. For gemstone use, most opal is cut and polished to form a cabochon. Opals too thin to produce a "solid" may be combined with other materials to form attractive gems.
An opal doublet consists of a relatively thin layer of precious opal, backed by a layer of dark-colored material, most commonly ironstone, dark or black common opal potchonyx, or obsidian.During these challenging times, we guarantee we will work tirelessly to support you. We will continue to give you accurate and timely information throughout the crisis, and we will deliver on our mission — to help everyone in the world learn how to do anything — no matter what.
Thank you to our community and to all of our readers who are working to aid others in this time of crisis, and to all of those who are making personal sacrifices for the good of their communities. We will get through this together. Updated: December 21, References. Opals are gorgeous stones.
But how can you tell if the necklace you bought with your hard-earned cash contains a real opal? Fake opals are often very hard to detect, but here are some tips for making sure your shimmery gemstone is the real thing.
Oregon Gemstone Mining
To create this article, volunteer authors worked to edit and improve it over time. This article has also been viewed 54, times. Learn more Explore this Article Steps. Related Articles. Check the country of origin. Most real opals are mined in Australia, which is the opal capital of the world. Russia and Hong Kong make high quality fake opals that some shady jewelers try to pass off as the real thing.
If your opal does not come from Australia then you should seriously suspect its validity. Inspect the symmetry. If the opal is a natural stone, then even with cutting and polishing it may not be entirely symmetrical. If the opal is a perfect circle or oval, then you should have a licensed jeweler inspect it before you make the purchase.
Look at the opal in strong, white light. Do not use a fluorescent light, because it can make the opal appear to have more facets than it actually does and can give the impression of additional colors. If the opal seems to have multiple layers of color, then this is a good indication that it is the real thing. However, if an opal only appears to have colors immediately below the surface, it may be a fake. Check the price. Look closely at the pattern. An opal created in a laboratory Gilson opal displays bright colours in large patches of colour.
The pattern is often 'too perfect' and ordered, and can also often display a 'snakeskin' pattern.