鲜艳的西瓜碧玺 • 1.45 克拉 • 六边形霓虹粉色核心与强烈绿色边缘 - 高度: 7 mm - 宽度: 6 mm- 0.29 g - (1)

DESCRIPTION:
This striking Watermelon Tourmaline slice from Minas Gerais, Brazil displays one of the most visually recognisable and sought after growth structures in the tourmaline family: a naturally zoned composition in which a vivid pink central nucleus is enclosed within a distinctly green outer rim. In this specimen, that classic watermelon architecture appears with exceptional clarity, but what makes the piece especially compelling is the geometry of the internal zoning. At the centre lies a remarkably well defined hexagonal core, immediately readable and beautifully framed by successive concentric colour transitions.

The outermost zone forms a continuous green rim that appears grassy green to olive green under normal lighting conditions. This perimeter is clearly developed and gives the slice its characteristic watermelon identity. When illuminated from behind, the green intensifies dramatically, shifting into a much more vivid luminous green, confirming the excellent optical responsiveness of the specimen and giving the outer zone a fresh, highly saturated appearance.

Between the green perimeter and the central nucleus, a lighter transitional band is visible, creating a soft and elegant chromatic passage between the outer and inner growth zones. This intermediate area enhances the readability of the crystal’s development and gives the slice a sense of depth rather than a simple two colour division. The zoning is therefore not abrupt, but sequential and beautifully organised, allowing the eye to follow the natural rhythm of crystal growth from edge to centre.

The core is the defining feature of the piece. It presents a distinctly hexagonal internal structure, highly unusual in its clarity and symmetry, with a deeper outer ring of more saturated pink to reddish pink surrounding a softer, paler internal pink centre. Under ambient light, the outer margin of the core shows a richer rose to reddish pink tone, while the inner nucleus remains lighter and softer. Under transmitted light, however, this central architecture becomes even more spectacular. The outer ring of the hexagonal core responds with an intense neon pink glow, while the softer inner centre blooms into a brighter and more luminous pink, creating a layered effect of colour activation within the heart of the specimen.

From the frontal view, the slice itself presents a softly rounded triangular outline, giving it a distinctive silhouette that differs from more conventional circular or oval tourmaline sections. This slightly triangular architecture reinforces the individuality of the piece and adds structural interest to the already exceptional internal zoning. Fine internal veils and natural growth textures remain visible, confirming the authenticity of the crystal and contributing subtle visual movement without obscuring the principal colour fields.

Overall, this specimen is a highly expressive natural Watermelon Tourmaline section in which colour zoning, geometric organisation and light response all work together. The combination of an olive to grassy green outer rim, a lighter intermediary halo, and a vivid hexagonal pink core with strong neon response under backlighting gives the slice strong collector appeal and an immediately recognisable aesthetic identity.

SPECIFICATIONS:
• Weight: 0.29 g
• Weight in carats: 1.45 ct
• Dimensions: 7 × 6 × 3.5 mm
• Origin: Minas Gerais, Brazil
• Mineral species: Tourmaline
• Variety: Watermelon Tourmaline
• Crystal system: Trigonal
• Form: Natural crystal cross section
• Crystal outline: Rounded triangular slice
• Core structure: Distinct hexagonal pink core
• Colour zoning: Concentric natural zoning with clearly defined internal structure
• Colour sequence: Pink central nucleus, deeper pink outer core ring, pale transitional band, green outer rim
• Colour response: Green rim becomes vivid green and pink core becomes neon pink under transmitted light
• Transparency: Translucent to locally transparent
• Lustre: Vitreous
• Internal features: Natural veils, internal growth textures and reflective structural features
• Surface features: Natural lateral growth lines and preserved crystal section architecture
• Treatment: None
• Condition: Natural, untreated crystal slice

NOTABLE POINTS:
• Distinct classic watermelon colour zoning
A highly readable natural combination of pink core and green outer rim, immediately recognisable as fine Watermelon Tourmaline.

• Exceptional hexagonal core structure
The central pink nucleus presents a remarkably clear hexagonal geometry, giving the specimen unusual visual precision and individuality.

• Olive green to grassy green outer rim
The perimeter displays a natural green tone ranging from olive green to grass green under standard illumination.

• Strong vivid green response under backlighting
When light passes through the specimen, the outer rim intensifies noticeably into a more luminous vivid green.

• Layered pink core architecture
The core is not uniform, but composed of a more saturated pink outer ring surrounding a softer and paler inner pink centre.

• Neon pink activation under transmitted light
Backlighting dramatically enhances the pink zones, especially the outer core ring, which responds with an intense neon pink glow.

• Pale transitional zone between core and rim
A lighter intermediary halo separates the green perimeter from the pink nucleus, creating depth and clearly recording successive stages of growth.

• Rounded triangular frontal outline
The face of the slice shows a gently triangular, rounded profile that adds further structural character.

• Strong natural growth expression
Internal veils and growth textures remain visible, reinforcing the authenticity of the specimen and contributing subtle internal movement.

• Balanced visual composition
The distribution of colour and form is highly harmonious, with each zone remaining distinct yet visually integrated within the whole crystal section.

COLLECTOR’S INTEREST:
Watermelon Tourmaline slices are highly appreciated when the internal zoning is strong, symmetrical and visually clean. This example is particularly attractive because the central core is not merely pink, but distinctly hexagonal and clearly separated from the green outer rim by an intermediate lighter zone. That structural clarity makes the specimen especially appealing to collectors who value not only colour, but also the mineralogical readability of crystal growth.

Its dramatic behaviour under transmitted light adds a further level of desirability. The transformation of the green rim into vivid green and the pink core into neon pink gives the slice a dynamic optical character that greatly enhances display appeal. Combined with its rounded triangular outline and strong natural architecture, this is a refined and highly collectible Watermelon Tourmaline section.

LAPIDARY POTENTIAL:
Although selective cutting could in theory isolate some of the coloured zones, doing so would destroy the most important qualities of the specimen: its complete cross sectional architecture, its distinct hexagonal core, and the visually powerful concentric growth sequence from green perimeter to pink centre. Its highest value lies in preservation as a natural crystal slice, where its full colour structure and optical behaviour can be appreciated without compromise.

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Photography and transparency:
All photos were taken under controlled light conditions, carefully selected to reproduce the most accurate natural color of each specimen. No filters, color enhancement, or artificial saturation were applied. The lighting setup is used exclusively to represent the piece as it appears under neutral daylight, ensuring that buyers can appreciate its true tones and luster without distortion.

Identification and ethics:
All specimens offered are guaranteed natural and as described. Their origin and mineral identification are provided with the most accurate and reliable information available. Every effort is made to ensure that each piece is presented with full transparency, avoiding any misleading details regarding its nature, treatment, or provenance.

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We sincerely thank you for your trust and preference. Our goal is to continuously bring you some of the most beautiful, unique, and exceptional mineral specimens from around the world. Each piece is carefully selected for its quality and character, ensuring that every purchase meets the highest standards. Your satisfaction and confidence are our top priorities, and we will always strive to exceed your expectations with every order.

With gratitude,
GemPulse Minerals