Exceptional Fire Opal "Dragon Egg" - Mexico 13.08 carats - NO RESERVE PRICE - Height: 18.5 mm - Width: 12.6 mm- 2.32 g - (1)

Discover this exceptional 13.08-carat Mexican fire opal, a remarkable gemstone distinguished by the intensity of its colors, the beauty of its natural matrix, and its extraordinary mineral composition.

This magnificent piece reveals several areas of ruby-red, garnet-red, and incandescent-orange opal, set in spectacular contrast against a matrix in shades of cream, beige, and orange. The depth of its colors evokes the embers of a volcano, giving this stone a particularly fascinating visual presence.

Its carefully polished oval shape reveals a naturally rich composition. Two substantial deep-red areas dominate the surface, accompanied by numerous smaller concentrations of orange-red scattered throughout the matrix. This distribution creates a harmonious, almost painterly whole, where every shade and pattern seems to tell part of the stone’s geological story.

One of the most alluring features of this specimen is the depth of its colored areas. In the light, some parts reveal beautiful translucent red hues, while others display a darker, almost garnet-like color. These natural variations create remarkable contrast with the lighter parts of the matrix.

Mexico, world-famous for its fire opals, has a prestigious gemological tradition dating back to pre-Columbian civilizations. Its volcanic deposits have produced some of the most iconic orange and red opals in the history of gemology.

Mexican opals with beautiful red saturation are especially prized by collectors. When they retain an attractive natural matrix, they also offer singular mineralogical and ornamental appeal.

At 13.08 carats and measuring 18.5 × 12.6 × 7.7 mm, this piece has elegant proportions that perfectly showcase its composition.

A sumptuous Mexican fire opal, combining the intensity of incandescent red, the beauty of a natural matrix, and the prestige of a historic origin, for lovers of gemstones with truly remarkable character.


Technical Specifications

- Name: Mexican fire opal in natural matrix
- Type: Natural opal with matrix
- Origin: Mexico
- Weight: 13.08 carats
- Dimensions: 18.5 × 12.6 × 7.7 mm
- Shape: Oval
- Cut: Polished cabochon
- Main color: Ruby red to garnet red
- Secondary colors: Incandescent orange, cream, beige, and brown
- Transparency: Translucent to semi-transparent opal areas, opaque matrix
- Luster: Vitreous to resinous
- Distinguishing feature: Two substantial deep-red areas accompanied by numerous orange-red patterns in the matrix
- Hardness: Approximately 5.5 to 6.5 on the Mohs scale
- Treatments: Undetermined
- Intended use: Gem collection, custom jewelry, and ornamental stone


Mexico – The Historic Cradle of Fire Opals

Mexico holds a fundamental place in the history of fire opals worldwide.

For centuries, its volcanic lands have been renowned for producing gemstones with extraordinary colors, ranging from golden yellow to deep red.

Long before the arrival of Europeans, pre-Columbian civilizations already knew and prized opals.

The Aztecs attached particular importance to certain of these stones, whose colors evoked light and fire.

Opals were known, among other names, by the Nahuatl term quetzalitzlipyollitli, generally interpreted as “stone of the bird of paradise.”

They were valued for their beauty and used in ornamental objects.

After the Spanish conquest, the extraction and circulation of many Mexican mineral resources changed considerably.

In the 19th century, Mexican fire opals regained significant commercial visibility, particularly thanks to deposits in the Querétaro region.

This region gradually became one of the most famous historic centers for the extraction of these gems.

Other Mexican regions, notably Jalisco and Hidalgo, are also known for their opal occurrences.

Stones from these volcanic formations are distinguished by their warm colors, sometimes of remarkable intensity.

Highly saturated red varieties are especially sought after for their chromatic depth.

Even today, Mexico remains one of the most iconic and prestigious sources of fire opals, holding a place of distinction among collectors, lapidaries, and gemstone enthusiasts.

This piece beautifully exemplifies that tradition, with its deep-red colors and particularly expressive natural matrix.
A Fascinating Geological Formation in the Heart of Volcanic Rocks
The story of this opal begins in the volcanic formations that characterize much of Mexico.

Over millions of years, volcanic activity produced large quantities of silica-rich rocks.

The movement of silica-rich water through fractures and cavities in these rocks gradually encouraged the formation of opal.

Under certain conditions, hydrated silica was deposited in available spaces, giving rise to mineral concentrations with varied colors and structures.

The formation of these gems depends on numerous geological and chemical factors.

The composition of mineral solutions, deposition conditions, and the presence of certain elements can influence their appearance.

The characteristic red and orange hues of fire opals are generally associated with iron compounds and optical phenomena related to the absorption and scattering of light.

These phenomena explain why some opals display colors reminiscent of lava, flames, or glowing embers.

When opal remains associated with its surrounding rock, it can form particularly interesting compositions.

The matrix then preserves part of the geological context in which the opaline material developed.

In this specimen, the red areas appear within a light-colored matrix, creating irregular, contrasting patterns.

This arrangement reflects the complexity of the natural processes that gave rise to the stone.

A true work of geology, born of the interaction between water, silica, and ancient Mexican volcanic formations.


A Spectacularly Intense Ruby-Red Color


The most remarkable feature of this opal is undoubtedly its magnificent deep-red areas.

Two substantial concentrations of color dominate the surface of the stone.

The first, located on the left, displays an intense garnet-red hue, accompanied by particularly luminous orange-red shades around its edges.

Its irregular shape and chromatic transitions create a fascinating visual effect.

The second area, located on the right, reveals a deep ruby-red color, with superb variations ranging from dark red to incandescent orange.

Under illumination, some parts show translucency that enhances the depth of the color.

Around these two main areas, numerous small orange-red concentrations punctuate the matrix.

They create visual continuity between the different parts of the stone and greatly enrich its composition.

The matrix itself displays a multitude of shades.

Cream, beige, and pale orange tones are accompanied by small brownish and grayish flecks.

These mineral details add depth and highlight the specimen’s natural character.

The overall effect evokes a volcanic surface crossed by several veins of incandescent material.

A particularly expressive composition, in which the deep reds seem to emerge from a light-colored matrix like fragments of fire trapped in stone.


The Rare Beauty of Fire Opals in Natural Matrix


Mexican fire opals occur in many forms.

Some are extracted as translucent fragments and cut to showcase their color.

Others remain partially associated with their host rock.

The latter have a special charm because they preserve a natural association between the gemstone and its mineral environment.

Opals in matrix appeal especially to collectors seeking stones whose aesthetic rests on complex natural patterns.

The beauty of these pieces depends not only on the color of the opal.

It also comes from the distribution of the colored areas, the texture of the matrix, and the overall harmony of the composition.

This specimen presents a particularly appealing combination.

Its two large deep-red areas occupy a central place in the stone’s appearance.

The surrounding smaller concentrations of color add further richness.

The light-colored matrix acts as a natural setting, visually enhancing the intensity of the reds.

The oval shape and polish showcase the whole without erasing the natural irregularities that give the stone its identity.

Each pattern is the result of a geological history unique to this specimen.

This singularity is one of the main attractions of fire opals in matrix.


A 13.08-Carat Gemstone with Remarkable Proportions


At 13.08 carats, this Mexican opal has a particularly appealing visual presence.

Its dimensions of 18.5 × 12.6 × 7.7 mm offer a generous viewing surface.

The oval shape naturally showcases the arrangement of the red areas.

The polish makes it possible to appreciate the color variations and the details of the matrix.

The deep-red areas immediately draw the eye, while the lighter shades provide balance and contrast.

The numerous small mineral flecks visible on the surface reinforce the authentic character of the composition.

The stone thus offers an aesthetic that is both elegant and expressive.

Its size makes it suitable for a natural gemstone collection or for an original jewelry design, with a setting tailored to the delicate nature of opal.


An Exceptional Collector’s Piece


Mexican fire opals are prized for their history, colors, and diversity.

Specimens with intense red color hold particular appeal for lovers of fine gemstones.

Opals in matrix, for their part, offer an additional aesthetic dimension.

They allow us to observe a natural association between several mineral materials.

This piece brings together several particularly appealing visual qualities.

The depth of its ruby-red areas is its main asset.

The presence of two large color concentrations creates a composition that is instantly recognizable.

The many small orange-red areas enrich the surface.

Finally, the cream and beige matrix provides remarkable contrast.

This combination gives the stone a singular identity.

It is especially suited to collectors of Mexican opals, mineralogy enthusiasts, and lovers of gemstones with original natural patterns.


Conclusion – An Extraordinary Expression of Mexico’s Volcanic Colors


This exceptional 13.08-carat Mexican fire opal, measuring 18.5 × 12.6 × 7.7 mm, is a magnificent illustration of the beauty of gemstones formed in volcanic environments.

Its two substantial ruby-red areas, accompanied by incandescent-orange hues, contrast spectacularly with a natural cream and beige matrix.

Its appearance evokes the power of fire, while its mineral composition recalls the complex geological processes that gave rise to Mexican opals.

Its historic origin, deep colors, and natural patterns give it a particularly alluring character.

A sumptuous Mexican fire opal, combining the depth of garnet red, the brilliance of incandescent hues, and the beauty of a natural matrix, making it a truly remarkable addition to any gemstone collection.


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