卓越的皇家蓝核心碧玺• 2.80 ct • 强烈色彩分区 - 高度: 9.5 mm - 宽度: 9 mm- 0.56 g - (1)

DESCRIPTION:
Like a deep blue pool framed by a luminous green shoreline, this bicolour tourmaline displays a striking contrast between its concentrated blue centre and its lighter outer border. The colour arrangement follows the outline of the specimen, creating a distinctive composition in which the central blue zone remains the principal visual focus.

The core presents a rounded triangular outline, surrounded by a paler transition into green and yellow green peripheral areas. This layered arrangement gives the specimen a clearly defined visual identity, with changes in colour intensity revealing different aspects of the zoning across its faces.

Under reflected light, the centre appears predominantly deep navy blue, with selected brighter blue reflections. Under transmitted illumination, it becomes considerably more expressive, revealing vivid blue areas framed by luminous yellow green edges. The photographs show this contrast under different lighting conditions, demonstrating how strongly illumination influences the appearance of the piece.

Its irregular triangular overall profile combines a broader base, gently curved sides and an uneven upper contour. The side views reveal the thickness of the section and a combination of flatter surfaces, angular edges and textured areas, giving the specimen a presence that extends beyond its frontal colour pattern.

Fine internal inclusions and a prominent diagonal internal feature add another layer of visual detail. These remain visible through the illuminated colour zones, creating an individual pattern within the blue centre and its surrounding border.

The vitreous lustre produces bright reflections across the surface, complementing the contrast between the darker core and the more luminous outer areas. From Minas Gerais, Brazil, this specimen combines distinctive colour zoning, an expressive outline and a particularly engaging response to transmitted light.

SPECIFICATIONS:
• Weight: 0.56 g
• Weight in carats: 2.80 ct
• Dimensions: 9.5 × 9 × 4 mm
• Origin: Minas Gerais, Brazil
• Mineral group: Tourmaline
• Colour type: Bicolour, with a blue core and green to yellow green outer zones
• Form: Crystal section with an irregular, rounded triangular outline
• Core shape: Rounded triangular colour zone
• Primary colour: Deep blue, becoming vivid blue under transmitted illumination
• Secondary colour expression: Pale green to luminous yellow green around the perimeter
• Colour distribution: Concentrated blue centre surrounded by a paler transitional zone and a green to yellow green border
• Transparency: Translucent, with locally more transparent areas
• Lustre: Vitreous
• Optical appearance: Strong contrast between the deep blue core and luminous peripheral zones under transmitted light
• Surface features: Reflective planes, uneven contours and textured areas visible across the different faces
• Internal features: Fine inclusions, linear features and a prominent diagonal internal feature

NOTABLE POINTS:
• Deep Blue Central Zone
The specimen displays a concentrated blue core that gives the piece its principal visual identity.

• Luminous Yellow Green Border
Under transmitted illumination, the peripheral zones become especially bright, framing the central blue with a contrasting luminous contour.

• Rounded Triangular Core
The central colour zone has a recognisable rounded triangular outline that complements the overall profile of the specimen.

• Distinctive Colour Zoning
The transition from deep blue through paler areas into green and yellow green creates a layered composition across the section.

• Expressive Response to Illumination
Different lighting conditions reveal a range of appearances, from a deep navy centre to more vivid illuminated blue areas.

• Strong Centre and Contour Contrast
The relationship between the darker core and lighter perimeter gives the specimen a clearly defined and immediately recognisable pattern.

• Three Dimensional Character
Oblique views reveal the thickness of the section, its angular edges and the relationship between its broad faces and outer contour.

• Bright Vitreous Reflections
Reflective surface areas catch the light and emphasise the specimen’s texture and geometry.

• Visible Internal Detail
Fine inclusions and linear features contribute to the individual character of the illuminated interior.

• Distinctive Diagonal Feature
A prominent diagonal internal feature crosses part of the colour pattern, providing a recognisable detail across several viewing angles.

• Multiple Viewing Expressions
Each orientation reveals a different balance of blue intensity, peripheral luminosity and surface reflection.

• Minas Gerais Provenance
The stated origin places the specimen in Minas Gerais, Brazil.

COLLECTOR’S INTEREST:
Colour zoned tourmaline sections offer a particularly engaging way to appreciate the relationship between internal colour patterns and the outline of a specimen. In this piece, the rounded triangular blue centre and its surrounding green to yellow green border form a coherent and visually distinctive composition.

Its appeal lies especially in the contrast between reflected and transmitted illumination. The deep blue centre gives the specimen a concentrated appearance under reflected light, while transmitted light reveals brighter blue areas and activates the luminous perimeter. These complementary views make the piece rewarding to examine from different angles and under different lighting conditions.

The visible inclusions, diagonal internal feature and irregular outer contour further distinguish the specimen. Together, they give it an individual identity that goes beyond the combination of colours alone.

For collectors of Brazilian tourmaline, blue centred sections and strongly contrasting colour zoning, this specimen offers an expressive combination of colour, internal detail and three dimensional form.

LAPIDARY POTENTIAL:
The blue centre and contrasting green to yellow green border offer an interesting starting point for a design intended to preserve the visible colour pattern. Any potential polishing, shaping or jewellery application would benefit from careful consideration of the relationship between the central zone and the surrounding perimeter.

A professional assessment would be needed to determine a suitable approach, taking into account the thickness, internal features and distribution of the different colour zones. These characteristics would guide decisions about orientation, finishing and the amount of material that could be retained.

Preserving the present section offers a particularly direct way to appreciate the complete colour arrangement. Its rounded triangular centre, luminous border and individual internal details can be enjoyed together as the defining features of the specimen.

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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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Appreciation and commitment:
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