独特的钥孔芯碧玺 • 3.75 克拉 • 双粉色核心，搭配非凡纹样 - 高度: 10 mm - 宽度: 9 mm- 0.75 g - (1)

DESCRIPTION:
Like a keyhole opening into a hidden world of colour, the distinctive central motif of this watermelon tourmaline draws the eye into successive layers of pink, a pale luminous halo and a broad lemon yellow green border. Within its pink heart, a darker silhouette resembles the opening of an old fashioned door lock, giving the specimen an immediately recognisable and evocative focal point.

This keyhole shaped feature is particularly apparent in the frontal photograph under transmitted illumination. Its rounded upper portion, narrower middle and broader lower outline stand out against the surrounding pink. As the viewing angle and illumination change, its definition softens and other internal details become more prominent, giving the centre several different visual expressions.

Around this darker central motif, a broader pink zone introduces shades of rose, raspberry and vivid magenta. Its outline is softly triangular to pear shaped, widening towards the lower part of the section. Variations in pink intensity create depth within this inner area, while the contrast with the surrounding pale band makes its shape especially clear.

The next layer forms a whitish to nearly colourless halo around the pink centre. Under transmitted illumination, this band appears particularly bright, tracing the inner colour zone and providing a delicate visual separation between the warm pink interior and the yellow green exterior. Its width varies around the centre, lending the arrangement a fluid, organic character.

Beyond this pale halo, an expansive outer zone displays lemon yellow with greenish nuances, shifting towards chartreuse, golden yellow and olive tones across the different photographs. In the more strongly illuminated views, the yellow component becomes especially luminous. In other orientations, deeper olive areas provide a richer frame around the pink heart.

A narrow, darker outermost rim outlines parts of the section, with brownish and muted pink tones visible along selected edges. Fine parallel bands can also be followed near portions of the perimeter, adding detail to the broader sequence of central pink, pale halo and lemon yellow green.

The overall outline is irregular and angular, combining a sloping upper contour, a broader lower edge and a pronounced lateral projection. Oblique views reveal the section’s depth and the relationship between its broad faces and reflective side surfaces. Closely spaced parallel markings and stepped areas along the sides introduce a further layer of texture.

Fine internal lines, reflective fissures and scattered dark inclusions remain visible throughout the colour zones. Some appear to radiate outward from the central area, while others form intersecting or gently curved paths. Together with the keyhole shaped motif, these details give the specimen an individual internal landscape.

Bright vitreous reflections complete the composition, moving across the faces and edges as the piece is viewed from different angles. From Minas Gerais, Brazil, this watermelon tourmaline combines a memorable central motif with a particularly expressive sequence of pink, pale and lemon yellow green colour zones.

SPECIFICATIONS:
• Weight: 0.75 g
• Weight in carats: 3.75 ct
• Dimensions: 10 × 9 × 4.5 mm
• Origin: Minas Gerais, Brazil
• Mineral group: Tourmaline
• Colour variety: Watermelon tourmaline
• Form: Crystal section with an irregular angular outline
• Distinctive central feature: Darker keyhole shaped motif visible within the pink centre in selected illuminated views
• Inner colour zone: Rose pink to raspberry and magenta
• Inner zone outline: Softly triangular to pear shaped
• Intermediate zone: Whitish to nearly colourless halo surrounding the pink interior
• Outer colour zone: Lemon yellow with greenish nuances, displaying chartreuse, golden and olive tones according to illumination
• Peripheral detail: Narrow darker rim with brownish and muted pink tones along selected edges
• Colour distribution: Darker central motif within a broader pink zone, followed by a pale halo and an expansive yellow green border
• Transparency: Translucent to locally transparent under transmitted illumination
• Lustre: Vitreous
• Surface features: Reflective broad faces, parallel side markings, stepped areas and angular edges
• Internal features: Fine inclusions, scattered dark features and intersecting reflective fissures
• Photographic presentation: Most photographs use backlighting to reveal the colour zoning and transmission of light through the section

NOTABLE POINTS:
• Keyhole Shaped Central Motif
A darker silhouette within the pink interior resembles a traditional keyhole, creating the specimen’s most memorable visual feature.

• Expressive Pink Heart
Rose, raspberry and magenta tones give the central colour zone warmth and depth, surrounding the darker motif with a vivid pink frame.

• Pale Separating Halo
A whitish to nearly colourless band traces the pink centre, providing a luminous interval before the broader outer colour zone begins.

• Lemon Yellow Green Border
The expansive exterior combines a strong lemon yellow expression with greenish nuances, becoming particularly bright under transmitted illumination.

• Successive Layers of Colour
The progression from the darker central motif through pink and a pale halo into yellow green creates a detailed composition across the section.

• Fine Peripheral Banding
Subtle parallel bands near portions of the perimeter add complexity beyond the principal colour zones.

• Contrasting Inner and Outer Shapes
The softly contoured pink interior contrasts with the more angular external outline, giving the specimen both geometric structure and organic character.

• Individual Internal Detail
Scattered inclusions, fine lines and reflective fissures form a distinctive pattern throughout the illuminated interior.

• Dimensional Side Views
Oblique orientations reveal the section’s depth, closely spaced side markings and changing reflections along its edges.

• Bright Vitreous Lustre
Reflective surfaces catch the light and accentuate the relationship between the broad faces, textured sides and layered colours.

• Multiple Expressions under Light
Different viewing conditions change the prominence of the keyhole motif, the intensity of the pink and the balance between lemon yellow and olive green.

• Minas Gerais Provenance
The specimen is offered with an origin of Minas Gerais, Brazil.

COLLECTOR’S INTEREST:
The keyhole shaped motif gives this watermelon tourmaline a particularly engaging visual identity. Framed within the pink centre, it invites the eye to move outward through successive layers of colour, as though revealing a miniature interior world. This recognisable silhouette adds an individual point of interest to the specimen’s broader zoning.

The arrangement is especially appealing for collectors who appreciate clearly separated colour zones. The pink interior, pale halo and lemon yellow green exterior can each be followed across the section, while their changing widths and outlines keep the composition visually varied. Fine peripheral bands and a darker outer rim add further detail on closer inspection.

Most of the photographs were taken with backlighting to reveal the specimen’s colours and internal zoning, using the same principle of transmitted illumination that can be used in museum and showroom displays of translucent minerals. Under ordinary reflected light, the pink centre and yellow green perimeter can appear considerably darker and more subdued; the photographs show how illumination changes their visual expression.

The different orientations also reveal complementary aspects of the piece. Frontal views emphasise the layered colour pattern and central motif, while oblique views bring forward the section’s depth, reflective edges and parallel surface markings. The keyhole resemblance is strongest in selected views, making orientation an engaging part of its display.

For collectors of Brazilian watermelon tourmaline, distinctive internal motifs and contrasting colour arrangements, this specimen offers a memorable combination of visual character and intricate detail. Its appeal lies in preserving the entire composition, from the darker central silhouette to the luminous outer border.

LAPIDARY POTENTIAL:
The central motif and surrounding colour zones offer an attractive starting point for a design that preserves the specimen’s visual identity. Any polishing or shaping would benefit from keeping the pink interior, pale halo and lemon yellow green perimeter together, allowing the full colour sequence to remain visible.

Orientation would be particularly important if the intention were to highlight the keyhole shaped feature. A professional lapidary assessment could establish how best to retain its appearance while considering the section’s internal structure, existing surfaces and suitability for further finishing.

If suitable for jewellery, a protective setting with an open back could allow light to pass through the section and reveal its layered colours. Preserving the piece as a collector’s specimen offers an equally appealing way to enjoy its distinctive motif, angular outline and changing expressions under illumination.

———————

Shipping and Handling:
All orders are shipped by Portuguese National Post and UPS
• Dispatch time: within 1 to 3 business days after payment confirmation to Catawiki
• Transit time service: between 2 to 5 business days within europe and worldwide, depending on destination national post.
• A tracking number is always provided

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.

Customs and import taxes:
Any customs duties, import fees, or local taxes applied by the destination country are entirely the responsibility of the winning bidder. These charges are not included in the auction price or shipping cost and are determined by the buyer’s local authorities.

Guarantee and resolution:
Customer satisfaction is a priority. In the event of any issue, such as loss, damage, or discrepancy, please contact us immediately through Catawiki’s messaging system. We will always find a fair and suitable solution, including refund, replacement, or other commercial arrangements whenever justified.

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