並外れたコロンビア産 EMERALD クリスタル • 10.05 ct • 強烈で豊かな緑の色調 - Height: 16 mm - Width: 11 mm- 2.01 g - (1)

DESCRIPTION:
Among the world’s most prestigious emerald localities, Muzo occupies an exceptional position. Colombian emeralds from this historic mining district are internationally admired for their distinctive green colour, strong saturation and unmistakable visual character, qualities that have made fine Muzo material particularly desirable among gemstone connoisseurs, collectors and specialist lapidaries.

This natural emerald crystal presents an attractive saturated green ranging from luminous medium green to richer emerald green areas. The colour remains clearly expressed throughout the body and becomes considerably more vibrant under transmitted illumination, where the crystal activates into an intense glowing green and reveals the depth of its internal structure.

Transparency is best described as semi transparent, with several areas allowing effective light penetration through the crystal. The internal body preserves natural inclusions, growth textures and subtle fissure structures characteristic of genuine emerald formation. These features create visual depth while allowing substantial zones of saturated green material to remain clearly visible.

The morphology is robust and naturally prismatic, retaining a recognisable hexagonal beryl architecture with broad crystal faces and a strong three dimensional presence. Portions of the original surface display natural growth textures, while traces of dark host material remain attached to several edges and recesses, creating an attractive contrast against the vivid green emerald body and preserving a direct connection to its geological environment.

With a total weight of 10.05 carats, this specimen also presents genuine lapidary potential. Its substantial volume, strong colour and semi transparent internal zones could allow an experienced cutter to recover a significant finished emerald, potentially approaching approximately 7 carats depending on orientation, inclusions and the final design selected. Equally, the crystal remains attractive as a natural Muzo specimen, combining prestigious provenance, saturated colour and practical gem potential within a single piece.

SPECIFICATIONS:
• Weight: 2.01 g
• Weight in carats: 10.05 ct
• Dimensions: 16 × 11 × 7 mm
• Origin: Muzo, Boyacá, Colombia
• Mineral species: Beryl
• Variety: Natural Emerald
• Crystal system: Hexagonal
• Form: Natural rough crystal
• Crystal habit: Robust prismatic emerald crystal
• Colour: Saturated emerald green
• Colour distribution: Predominantly consistent with natural tonal variation
• Transparency: Semi transparent
• Lustre: Vitreous
• Surface features: Natural crystal faces and growth textures
• Internal features: Natural inclusions, fissures and growth structures
• Associated material: Partial dark host material preserved on several surfaces
• Treatment: None
• Condition: Natural, untreated and unpolished specimen

NOTABLE POINTS:
• Prestigious Muzo Provenance
The specimen originates from Muzo in Boyacá, one of Colombia’s most celebrated emerald producing districts and a historic reference locality for fine natural emerald.
• Saturated Emerald Green Colour
The crystal displays an attractive and clearly defined green with strong saturation. Under illumination, the colour intensifies into a luminous and highly expressive emerald tone.
• Semi Transparent Crystal Body
Several portions permit effective light transmission, revealing internal depth and providing greater visual richness than opaque rough material.
• Strong Response to Transmitted Light
Backlighting activates the crystal into a vivid glowing green. This optical behaviour clearly demonstrates the concentration and distribution of colour within the emerald body.
• Substantial 10.05 Carat Weight
The specimen provides meaningful volume both as a collector crystal and as potential lapidary rough. Its proportions offer several possible orientation options for an experienced cutter.
• Recognisable Beryl Architecture
The crystal retains a robust prismatic form consistent with the hexagonal crystal system of beryl. Broad surfaces and vertical structure give the specimen a strong mineralogical identity.
• Natural Internal Growth Features
Inclusions, fissures and subtle growth textures remain visible throughout the crystal. These features preserve geological authenticity and create layered visual depth.
• Attractive Matrix Contrast
Dark associated material remains naturally attached to several surfaces and recesses. This contrast enhances the intensity of the green while preserving evidence of the original formation environment.
• Strong Vitreous Reflections
Several crystal faces respond attractively to directional illumination, producing bright reflections that complement the saturated colour.
• Genuine Lapidary Potential
The combination of colour, volume and semi transparent areas offers realistic possibilities for cutting a substantial gemstone, subject to careful examination and orientation.
• Untreated Natural Material
The specimen remains completely natural, unpolished and untreated, preserving its original colour, surface features and internal structure.
• Dual Collector and Gem Interest
The piece can be appreciated either as a natural Muzo emerald crystal or as valuable cutting rough, giving it appeal across both mineralogical and gemmological collecting fields.

COLLECTOR’S INTEREST:
Muzo emeralds hold a particularly distinguished position in the international gemstone market. Their reputation is built upon generations of production associated with attractive green saturation, distinctive internal character and one of the most historically important emerald provenances in the world.

This specimen combines that locality prestige with substantial weight, semi transparent structure and clearly visible natural crystal architecture. The attached host material and original growth surfaces further strengthen its identity as a geological specimen rather than merely an isolated fragment of green rough.

Its dual potential is especially relevant. Collectors may preserve it as a natural Muzo emerald, while specialist lapidaries may recognise the possibility of recovering a significant finished stone from its coloured and light transmitting sections.

LAPIDARY POTENTIAL:
At 10.05 carats, the crystal possesses sufficient volume for a substantial cutting project. Its saturated colour and semi transparent zones could potentially yield an important finished emerald, possibly approaching approximately 7 carats if the internal structure, orientation and chosen design permit, although the final recovery can only be determined by direct professional examination.

Careful planning would be essential to preserve the strongest colour while navigating the natural inclusions and fissure structures. The specimen nevertheless offers genuine lapidary interest and could produce a highly individual gemstone retaining the distinctive green character associated with emeralds from Muzo.

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Photography and transparency:
All photographs are taken under controlled lighting conditions using a macro lens, carefully selected to present each specimen as accurately as possible.
No filters, colour enhancement, or artificial saturation are applied.
The lighting setup uses a calibrated 5500K light source, replicating neutral daylight to reveal natural tones, surface features, and internal characteristics. Under warmer or weaker indoor lighting, colours may appear slightly different, which is normal.
The purpose of this photographic process is documentation and representation, not visual enhancement. Images are intended to reflect the specimen faithfully as it appears under balanced natural light conditions.

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