23.13 CARATS!! PIGEON BLOOD RUBY - TOP QUALITY GÉANT - MAURITANIA - Height: 20.3 mm - Width: 12.1 mm- 4.63 g - (1)

Discover this exceptional 23.13-carat natural rough ruby from Mauritania, an especially unusual origin on the international market for collectible rubies.

This magnificent specimen stands out for its intense red coloration, remarkable brightness under transmitted light, and natural crystal morphology, offering a particularly appealing combination of color, size, and mineralogical character.

Its color evokes the prestigious hues known as “Pigeon Blood Red,” with a range of shades from deep crimson to vivid raspberry red, accompanied by subtle pinkish reflections.

Measuring 20.3 × 12.1 × 11 mm, this crystal has an elongated, irregular morphology, characterized by several natural ridges, visible growth structures, and particularly interesting variations in transparency.

Under transmitted light, the stone reveals spectacular red brightness, highlighting its translucent areas, inclusions, and internal crystal structures.

One of this specimen’s most remarkable features is the contrast between its dark red, almost burgundy parts and the areas that light passes through, which then take on a particularly vivid raspberry-red color.

This natural variation gives the crystal remarkable visual depth and highlights its genuinely rough character.

The stone also retains many natural features, including dark inclusions, surface irregularities, and visible growth lines.

Described as entirely natural, unheated, and untreated, this ruby retains the characteristics of its original state.

Its weight of 23.13 carats, intense coloration, and Mauritanian provenance make it a particularly interesting specimen for collectors of natural corundum and enthusiasts of rough gemstones.


Technical specifications

- Gemstone: Natural rough ruby (red corundum)
- Stated origin: Mauritania, West Africa
- Weight: 23.13 carats (4.626 grams)
- Dimensions: 20.3 × 12.1 × 11 mm
- Color: Intense crimson red, raspberry red, and burgundy-red hues
- Color appearance: Evocative of pigeon blood red hues
- Transparency: Translucent in places under transmitted light
- Morphology: Elongated rough crystal with naturally irregular ridges and contours
- Luster: Vitreous on some surfaces
- Hardness: 9 on the Mohs scale
- Treatments: None (0 treatments)
- Heating: None – Unheated
- Condition: Natural rough, with visible inclusions and crystal structures
- Intended use: Mineral collection, gemology, and lapidary study


An exceptional color – The intensity of pigeon blood red


The most spectacular feature of this ruby is its particularly intense red coloration, revealing all its richness when a light source passes through the crystal.

Under transmitted light, the stone reveals a magnificent range of hues, from luminous raspberry red to deep crimson, accompanied by particularly bright pinkish reflections.

Some parts of the crystal show interesting translucency, allowing light to enter the stone and reveal its internal structures.

Other areas, darker and rich in inclusions, retain a deep burgundy-red color, creating a striking natural contrast.

This combination of hues gives the specimen remarkable visual depth.

“Pigeon blood” red has historically been one of the most prestigious color designations in the world of rubies.

Traditionally associated with the famous rubies of Burma, this designation describes a category of reds particularly prized for their intensity, color balance, and vividness.

Rubies with comparable hues attract considerable interest among collectors and gemstone enthusiasts.

This specimen has a coloration evocative of these prestigious hues, although official classification as “Pigeon Blood Red” requires an independent gemological analysis.

A magnificent expression of natural red, combining chromatic intensity, translucency, and spectacular contrasts.


Mauritania – An unusual and fascinating provenance


Located in the northwest of the African continent, Mauritania has a remarkable geological heritage, characterized by vast ancient formations, crystalline massifs, and metamorphic terrains.

A significant part of its territory belongs to the Reguibat Shield geological domain, made up of Precambrian formations among the oldest in the region.

These geological assemblages bear witness to a particularly complex history, marked by numerous episodes of metamorphism, deformation, and rock transformation.

Unlike countries such as Mozambique, Myanmar, or Madagascar, Mauritania is not among the major commercial sources historically known for their rubies.

This origin therefore remains particularly unusual in corundum collections.

For collectors passionate about the geographical diversity of gemstones, a ruby attributed to Mauritania thus has particular documentary and mineralogical interest.

Specimens from regions less represented on the market can enrich a collection beyond the major traditional sources.

The Mauritanian provenance of this stone is the origin stated for the specimen and would require traceability documentation or independent expert assessment to be confirmed.

An unusual African origin that gives this ruby particular appeal to collectors seeking less conventional sources.


23.13 carats – A rough crystal of remarkable size


At 23.13 carats, this ruby has a particularly notable physical presence for a rough specimen.

Its dimensions of 20.3 × 12.1 × 11 mm give it a relatively elongated morphology, with pronounced natural ridges.

Its structure features several growth zones, irregular surfaces, and dark inclusions that contribute to its mineralogical identity.

Observation under transmitted light makes it possible to distinguish different regions of the crystal.

Some areas allow particularly intense red light to pass through, while others appear more opaque and show deep hues.

This alternation highlights the specimen’s internal variations and allows its natural structure to be appreciated.


This ruby stands out in particular for:

- Its substantial weight of 23.13 carats.
- Its dimensions of 20.3 × 12.1 × 11 mm.
- Its magnificent crimson and raspberry-red coloration.
- Its contrast between translucent areas and darker parts.
- Its intense brightness under transmitted light.
- Its elongated, rough crystal morphology.
- Its visible natural growth structures.
- Its mineral inclusions and surface irregularities.
- Its stated origin in Mauritania, unusual for ruby.
- Its stated absence of heating and treatment.
All these features contribute to its aesthetic and mineralogical interest.


A fascinating geological formation – The natural history of ruby


Ruby belongs to the corundum family, minerals composed primarily of aluminum oxide, with the chemical formula Al₂O₃.

Its famous red coloration is primarily due to the presence of chromium within its crystal structure.

Natural rubies form in specific geological environments, generally associated with high temperatures and pressures.

Their formation requires, in particular, chemical conditions that allow corundum to crystallize and incorporate the elements responsible for its coloration.

As they grow, crystals can develop different internal structures, incorporate mineral inclusions, and exhibit natural variations in transparency.

This magnificent specimen retains several of these features.

Its dark inclusions, surface irregularities, and visible growth zones are all characteristics that attest to its rough nature.

Under transmitted light, illumination reveals part of this internal architecture, offering a particularly interesting view.

Every natural crystal thus has a unique identity, directly linked to its geological history.


A natural, unheated, and untreated ruby


In the international gemstone industry, many rubies undergo heat treatments intended to improve their color or transparency.

Rubies retained in their natural state, without heating or artificial treatment, are of particular interest to collectors and gemology enthusiasts.

This specimen is described as 100% natural, unheated, and untreated.

Its magnificent red coloration is thus presented as entirely natural in origin.

The absence of treatment is an important criterion in the gemological assessment of rubies, particularly when accompanied by attractive coloration.

An independent gemological examination is still required to officially confirm this characteristic.


Collecting and lapidary potential – A stone with many points of interest


Thanks to its weight of 23.13 carats, intense coloration, and natural morphology, this ruby is an appealing piece for collectors of rough corundum.

Its stated Mauritanian provenance is also of interest to enthusiasts of African mineralogy and collectors seeking unusual origins.

Its dimensions and natural shape may appeal to lapidaries wishing to study its internal characteristics and potential for transformation.

The translucent areas visible under transmitted light make it possible to appreciate certain parts of the crystal.

However, dark inclusions, any fractures, and internal variations in transparency should be examined thoroughly before any potential cutting.

The yield and quality of a cut gemstone cannot be guaranteed based on photographs alone.

Keeping this ruby in its rough state is also an excellent option for preserving its natural morphology, crystal structures, and mineralogical interest.

It is therefore an interesting piece for a collection of African rubies, natural gemstones, or rough corundum with intense colors.


Conclusion – An exceptional 23.13-carat natural ruby


This exceptional natural rough ruby from Mauritania, weighing 23.13 carats and measuring 20.3 × 12.1 × 11 mm, stands out for its magnificent crimson-red coloration, its brightness under transmitted light, and its natural crystal morphology.

Its raspberry-red, deep red, and burgundy hues, combined with its translucent areas and visible internal structures, give it a particularly remarkable aesthetic identity.

Described as entirely natural, unheated, and untreated, this crystal retains the characteristics of its rough state.

Its substantial weight, intense coloration, and unusual provenance make it an interesting specimen for gemology enthusiasts and collectors of natural rubies.

A remarkable 23.13-carat rough ruby, combining magnificent red coloration, spectacular brightness, distinctive natural morphology, and a particularly unusual African provenance.



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