40.02 CARATS!! PIGEON BLOOD RUBIES - TOP QUALITY GIANT - MOZAMBIQUE - Height: 29 mm - Width: 12.6 mm- 8 g - (1)

Discover this exceptional 40.02-carat natural rough ruby from Mozambique, one of the world’s most renowned sources of high-quality rubies.

This impressive gemstone stands out for its magnificent, intense red color, reminiscent of the prestigious “Pigeon Blood Red” hue, particularly sought after in the world of high-end gemology.

Weighing an impressive 40.02 carats (8.004 grams) and measuring 29 × 12.6 × 11 mm, this ruby has a naturally elongated shape that is particularly appealing to collectors of rough gemstones.

Its deep red color, accompanied by pinkish-red and purplish hues, is revealed spectacularly under transmitted light.

Light penetrates certain parts of the crystal, revealing an intense red glow, natural growth structures and beautiful variations in saturation.

This specimen is presented as 100% natural, unheated and untreated, thus retaining its original color and mineralogical characteristics.

Its substantial weight, particularly expressive color and rough form make it a remarkable collector’s piece, also of interest for potential lapidary study.

A superb 40.02-carat natural ruby, combining spectacular red color, impressive dimensions and the prestige of Mozambique’s famous deposits.


Technical Specifications

- Gemstone: Natural ruby
- Variety: Red corundum
- Stated origin: Mozambique
- Weight: 40.02 carats (8.004 grams)
- Dimensions: 29 × 12.6 × 11 mm
- Color: Intense red, with pinkish-red to purplish hues
- Suggested hue: Pigeon Blood Red (pigeon’s blood), uncertified
- Transparency: Translucent in certain areas under transmitted light
- Shape: Natural elongated rough crystal
- Luster: Vitreous on suitable surfaces
- Hardness: 9 on the Mohs scale
- Treatments: None (no treatment)
- Heating: None – Unheated
- Condition: Natural rough, with visible inclusions and internal structures
- Intended use: Mineral collection, gemology and study of potential for cutting


A spectacular red color – The allure of “pigeon’s blood”


The most striking feature of this ruby is its extraordinary color intensity.

Under transmitted light, the stone reveals a vivid, deep red, particularly luminous in its central area, while its ends display darker hues.

This natural distribution of color creates a remarkable contrast and highlights the depth of the crystal.

The red seems literally to glow as light passes through the translucent areas, revealing a succession of hues ranging from intense raspberry red to a slightly purplish red.

In the world of gemology, the term “pigeon’s blood” refers to a particularly prestigious category of red, historically associated with the most sought-after rubies.

This color is prized for its saturation, vividness and balance between its different color components.

Although this designation has long been associated with the famous rubies of Burma, some Mozambican rubies can also display comparable color characteristics.

The coloration of this specimen is visually reminiscent of this category, although no official classification can be established from photographs.

An independent gemological assessment would be required to confirm whether this commercial designation may apply.

A magnificent, intense red color, whose depth and luminosity are the main attractions of this natural stone.


Mozambique – A prestigious source that has become indispensable


Mozambique is now considered one of the world’s leading producers of natural rubies.

Located in southern Africa, the country has particularly rich geology, shaped by major metamorphic and tectonic events.

The discovery of extensive ruby deposits in the Montepuez region in the north of the country in the late 2000s profoundly transformed the international gemstone market.

Before this period, Burmese rubies held a dominant position in the high-quality gemstone trade.

The arrival of Mozambican rubies revealed a new major source of crystals that sometimes display exceptional colors and remarkable transparency.

Some Mozambican rubies are now used in high jewelry creations, while the most interesting rough crystals attract the attention of collectors and professionals.

The Montepuez region is particularly famous for its rubies with intense red hues, sometimes accompanied by pinkish or purplish tones.

Stones from these deposits display a wide variety of shapes, transparency levels and internal characteristics.

This diversity contributes to the gemological interest of Mozambican rubies.

An internationally renowned source, associated with one of the most significant ruby discoveries in contemporary history.


Exceptional geological formation – Millions of years of history


Ruby is the red variety of corundum, a mineral whose formation requires specific geological conditions.

Its color comes primarily from the presence of chromium within its crystal structure.

The concentration of this element, together with the conditions of formation and the chemical composition of the crystal, directly influences the shade and intensity of its color.

Mozambican rubies formed in complex metamorphic environments subjected to high temperatures and pressures.

During these geological transformations, certain minerals recrystallized, allowing corundum crystals to form under favorable chemical conditions.

Tectonic movements and erosion subsequently helped make some of these deposits accessible.

The internal lines, inclusions and irregularities visible in this ruby bear witness to its natural history.

These characteristics are important elements in the gemological study of a rough crystal.

Each natural ruby is therefore the result of a complex geological history, with its color and structure developing long before it was extracted.


An impressive weight of 40.02 carats – A substantial rough stone


At 40.02 carats, this ruby has particularly interesting dimensions for a rough gemstone.

Its length of 29 mm gives it a distinctive elongated silhouette, while its thickness of 11 mm gives it appreciable volume.

Natural rubies can reach considerable sizes, but specimens combining beautiful color, substantial weight and translucent areas are of particular interest.

The value and rarity of a rough ruby depend in particular on its transparency, inclusions, structural integrity and potential yield when cut.


This specimen has several remarkable features:

- A substantial weight of 40.02 carats, especially interesting for a rough ruby collection.
- A magnificent, intense red coloration reminiscent of the famous pigeon’s-blood hues.
- Beautiful luminosity under transmitted light.
- A naturally elongated shape measuring 29 mm.
- Visible internal structures and growth features.
- Stated origin in Mozambique, a region renowned worldwide for its rubies.
- A stone presented as entirely natural, unheated and untreated.
A magnificent rough crystal whose dimensions, color and visual presence are its main strengths.


An unheated, untreated gemstone – The importance of its natural condition


In the international gemstone trade, many rubies undergo heat treatments intended to improve their appearance.

Heating can notably alter certain color or transparency characteristics.

Unheated natural rubies therefore hold a special place among collectors and those who appreciate gemstones preserved in their original state.

This ruby is described as entirely natural, with no treatment and no heating.

Its color is thus presented as the exclusive result of the geological conditions that accompanied its crystallization.

This feature represents an additional point of interest for enthusiasts of natural gemstones.

Official confirmation that no treatments have been applied nevertheless requires analysis by an independent gemological laboratory.

A rough stone presented in its natural state, retaining its color, inclusions and the characteristics of its geological formation.


Collection or cutting study – A gemstone of multiple interests


This ruby is of particular interest to two groups of enthusiasts.

For collectors, it is a superb example of a natural rough ruby from Mozambique, with intense color, impressive dimensions and interesting internal structures.

Its elongated shape and luminous red make it an attractive piece for a collection devoted to natural gemstones.

For gemology and lapidary professionals, its dimensions may also warrant an assessment of its potential for cutting.

The translucent areas visible under transmitted light are of interest, but they are not, by themselves, enough to determine whether high-quality faceted gems could be obtained.

A thorough analysis of transparency, fractures, inclusions and crystallographic orientation would be necessary before any decision to cut it.

Keeping the crystal in its rough state is also a particularly appealing option for preserving its natural character.


Conclusion – A spectacular 40.02-carat natural ruby


This exceptional natural rough ruby from Mozambique, weighing 40.02 carats and measuring 29 × 12.6 × 11 mm, is a magnificent piece for collectors and gemstone enthusiasts.

Its intense red color, reminiscent of the prestigious “pigeon’s blood” hue, its luminosity under transmitted light and its remarkable dimensions give it a particularly captivating character.

Presented as entirely natural, unheated and untreated, it retains the authenticity of a rough gemstone.

The international renown of Mozambique’s deposits, its substantial weight and its spectacular appearance enhance its mineralogical and gemological interest.

A magnificent 40.02-carat rough gemstone, combining intense red color, a remarkable natural shape and all the prestige of Mozambican rubies.



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