27.10 CARATS !! PIGEON'S BLOOD RUBIES - TOP QUALITY GÉANT - Height: 18.2 mm - Width: 14.6 mm- 5.42 g - (1)

Discover this exceptional natural rough ruby weighing 27.10 carats, from Mauritania, a particularly unusual origin in the world of collectible rubies.

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

Its color evokes the prestigious tones known as “Pigeon Blood Red,” with a palette ranging from deep crimson red to bright raspberry red, accompanied by magnificent reddish-pink reflections.

Measuring 18.2 × 14.6 × 12.2 mm, this crystal has a massive, irregular morphology, characterized by an almost pyramidal silhouette, pronounced natural relief, and a particularly expressive crystal structure.

Under transmitted light, the stone reveals exceptional pinkish-red brightness, showing different areas of translucency as well as its internal growth structures.

One of the most captivating features of this specimen is its natural silhouette, with a raised upper section and a broader base, giving it remarkable visual presence.

Light passes mainly through the lower and central parts of the crystal, revealing magnificent chromatic intensity and highlighting natural variations in transparency.

The stone also retains its natural features, including dark inclusions, growth lines, surface irregularities, and crystal relief characteristic of its rough state.

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

Its impressive weight of 27.10 carats, intense color, 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)
- Declared origin: Mauritania, West Africa
- Weight: 27.10 carats (5.42 grams)
- Dimensions: 18.2 × 14.6 × 12.2 mm
- Color: Intense crimson red, raspberry red, and reddish-pink hues
- Color appearance: Evokes pigeon blood red tones
- Transparency: Translucent under transmitted light, with particularly bright areas
- Morphology: Massive, irregular rough crystal with a pyramidal silhouette
- Luster: Vitreous on certain surfaces
- Hardness: 9 on the Mohs scale
- Treatments: None (no treatment), according to the information provided
- Heating: None – Unheated, according to the information provided
- Condition: Natural rough, with visible inclusions and crystal structures
- Intended use: Mineralogical collection, gemmology, and lapidary study


An Exceptional Color – The Intensity of Pigeon Blood Red


The most spectacular feature of this ruby is its particularly vivid red coloration, which reveals its full richness when a light source shines through the crystal.

Under transmitted light, the stone reveals a magnificent palette of hues ranging from bright raspberry red to deep crimson red, accompanied by particularly intense reddish-pink reflections.

Its central section displays a luminous color, while some upper and peripheral areas appear darker and deeper.

This natural distribution of color creates a striking contrast, emphasizing the relief and distinctive morphology of the crystal.

The different areas of translucency also reveal internal structures, natural inclusions, and growth variations.

Historically, “pigeon blood” red has been one of the most prestigious color designations in the world of rubies.

Traditionally associated with the famous rubies of Burma, this designation evokes red hues particularly prized for their intensity, vividness, and color balance.

Rubies displaying comparable hues are of great interest to collectors and gemstone enthusiasts.

This specimen has a color evocative of these prestigious hues, although official attribution of the designation “Pigeon Blood Red” requires independent gemological assessment.

A magnificent expression of natural red, combining chromatic intensity, depth, and spectacular brightness.


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, a vast geological complex composed of particularly ancient Precambrian formations.

These terrains bear witness to a complex geological history, marked by several episodes of metamorphism, deformation, and rock transformation.

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

This origin therefore remains particularly unusual in the international corundum market.

For collectors passionate about the geographical diversity of gemstones, specimens attributed to less-represented regions have particular documentary and mineralogical interest.

They make it possible to enrich a collection beyond the classic sources and explore the geological diversity of the African continent.

The Mauritanian provenance of this ruby is the declared origin of the specimen and would require traceability documentation or independent assessment to be confirmed.

An unusual African origin that gives this crystal particular appeal to collectors of natural corundum.


27.10 Carats – A Rough Crystal with Impressive Proportions


At 27.10 carats, this ruby has remarkable physical presence for a rough specimen.

Its dimensions of 18.2 × 14.6 × 12.2 mm give it a massive morphology, characterized by a relatively broad base and a raised upper section.

Its naturally irregular silhouette gives it an almost pyramidal appearance, particularly appealing for display in a collection.

Its structure features several growth surfaces, pronounced crystal relief, and internal variations in transparency.

Observation under transmitted light reveals a spectacular distribution of light.

The lower part of the crystal becomes intensely luminous, while the upper areas retain deeper red hues.

This transition highlights the specimen’s natural structure and contributes to its aesthetic appeal.


This ruby is particularly notable for:

- Its impressive weight of 27.10 carats.
- Its dimensions of 18.2 × 14.6 × 12.2 mm.
- Its magnificent crimson and raspberry-red coloration.
- Its particularly intense brightness under transmitted light.
- Its areas of attractive translucency.
- Its massive, almost pyramidal natural morphology.
- Its visible crystal growth structures.
- Its natural inclusions and variations in transparency.
- Its declared provenance in Mauritania, an unusual origin for ruby.
- Its declared absence of heating and treatment.
All these characteristics contribute to its aesthetic, gemological, 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 color comes mainly from the presence of chromium within its crystal structure.

Natural rubies form in particular geological environments, generally associated with high temperature and pressure conditions.

Their formation requires specific chemical conditions, including sufficient availability of aluminum and the presence of elements responsible for their color.

As they grow, crystals may incorporate different minerals, develop inclusions, and display natural variations in transparency.

This magnificent specimen retains several of these characteristics.

Its internal structures, surface irregularities, and color variations testify to its rough character.

Under transmitted light, these features become particularly interesting to observe, revealing part of the crystal’s internal architecture.

Each natural ruby thus has a unique identity, directly linked to the geological conditions in which it formed.


A Natural, Unheated, and Untreated Ruby


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

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

This specimen is declared to be 100% natural, unheated, and untreated.

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

The absence of treatment is an important criterion in the gemological evaluation of rubies, particularly when accompanied by attractive color and good translucency.

Independent gemological analysis is still required to officially confirm this characteristic.


Collecting and Lapidary Potential – A Stone of Many Interests


With its weight of 27.10 carats, intense color, and natural morphology, this ruby is an appealing piece for collectors of rough corundum.

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

Its dimensions and massive form 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, inclusions, possible fractures, and internal variations in transparency require thorough examination before any potential cutting.

The yield and quality of a cut gemstone cannot be guaranteed from 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 addition to a collection of African rubies, natural gemstones, or rough corundum with intense colors.


Conclusion – An Exceptional Natural Ruby Weighing 27.10 Carats


This exceptional natural rough ruby from Mauritania, weighing 27.10 carats and measuring 18.2 × 14.6 × 12.2 mm, stands out for its magnificent crimson-red coloration, spectacular brightness under transmitted light, and particularly expressive crystal morphology.

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

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

Its substantial weight, intense color, and unusual provenance make it a particularly interesting specimen for gemmology enthusiasts and collectors of natural rubies.

A remarkable 27.10-carat rough ruby, combining magnificent red coloration, spectacular brightness under transmitted light, distinctive natural morphology, and an unusual African provenance.




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