巴西罕见双色帝王黄玉 • 1.60 克拉 • 独特的紫色与金色分区 - 高度: 12 mm - 宽度: 4.5 mm- 0.32 g - (1)

DESCRIPTION:
A violet crown above a column of gold. Before the eye begins to explore its surfaces, this Imperial Topaz establishes its identity through the meeting of two contrasting colours within one slender crystal.

The bicolour arrangement is the defining feature of this specimen. Golden champagne and honey tones extend through the lower body, while the upper portion gathers a distinctly different palette of pink, purple and violet. Rather than appearing as scattered reflections, these colours occupy recognisable regions along the prism, giving the crystal a clear visual progression from its base towards its termination.

Their relationship is particularly appealing. The warmth of the golden body emphasises the cooler violet tones above, while pink nuances soften the transition between them. The boundary is not a perfectly straight dividing line: the colours meet through an intermediate area whose appearance varies across the photographed faces. This gives the zoning depth and individuality rather than the simplicity of two uniform bands.

The elongated form provides an elegant setting for this colour contrast. Longitudinal striations guide the eye upwards through the golden section towards the coloured crown, where inclined faces and irregular surface details catch the light. The termination becomes a natural focal point, both through its shape and through the concentration of pink and violet around it.

Transparent passages, visible internal structures and vitreous reflections add further interest without competing with the central attraction. From Ouro Preto, Minas Gerais, this is an Imperial Topaz whose character rests above all on the dialogue between its two colour regions: warm below, cooler above, united within a single expressive prism.

SPECIFICATIONS:
• Weight: 0.32 g
• Weight in carats: 1.60 ct
• Dimensions: 12 × 4.5 × 3 mm
• Origin: Ouro Preto, Minas Gerais, Brazil
• Mineral species: Topaz
• Variety: Imperial Topaz
• Crystal system: Orthorhombic
• Crystal habit: Elongated prismatic crystal
• Termination: Asymmetric termination with inclined faces and textured surfaces
• Colour: Golden champagne to honey yellow body with a pinkish purple to violet upper zone
• Colour distribution: Distinct longitudinal progression from a predominantly golden lower section to a contrasting violet pink upper portion
• Colour behaviour: The relative intensity of the golden, pink and violet tones varies with illumination and viewing direction
• Transparency: Transparent to locally translucent, with visible internal features
• Lustre: Vitreous
• Surface features: Longitudinal striations, reflective prism faces and irregular terminal textures
• Internal features: Fine inclusions and reflective internal structures visible through the body
• Hardness: 8 on the Mohs scale

NOTABLE POINTS:
• Distinctive bicolour identity
A golden lower body and violet pink upper zone form the specimen’s defining visual feature.

• Contrasting violet crown
Purple, pink and violet tones gather around the upper portion, drawing attention towards the termination.

• Warm golden body
Champagne and honey tones extend through the lower prism, providing a luminous counterpart to the cooler crown.

• Clearly positioned colour zones
The contrasting colours occupy recognisable regions along the crystal rather than appearing only as isolated highlights.

• Graduated colour transition
Intermediate pink and warmer tones soften the meeting between the predominantly golden and violet regions.

• Elongated prismatic silhouette
The slender form gives the colour progression room to unfold visibly from the base towards the top.

• Individual terminal geometry
Inclined upper faces and an asymmetric outline lend the coloured crown a distinctive sculptural character.

• Longitudinal surface striations
Fine lines along the prism reinforce its vertical structure and lead the eye through the colour zones.

• Transparent interior passages
Areas of transparency reveal internal detail and allow the body colour to be appreciated in depth.

• Vitreous reflections
Bright surface highlights emphasise the prism edges and bring definition to the upper faces.

• Interest across several perspectives
The photographed views reveal different balances of gold, pink and violet within the same elongated form.

• Ouro Preto provenance
The supplied locality places the specimen within the historic Brazilian region associated with Imperial Topaz.

COLLECTOR’S INTEREST:
The principal collecting interest lies in the combination of contrasting colour zones within a recognisable Imperial Topaz crystal. The golden body and violet pink crown are not merely separate attractive details: their placement creates the visual identity of the specimen, with the elongated habit reinforcing their relationship.

For a collection exploring colour variation in Imperial Topaz, this piece offers a distinctive counterpoint to specimens dominated by a single body colour. It invites examination of how the colours meet, how their relative prominence changes between faces and how the upper zone relates to the terminal geometry.

Directional or transmitted illumination can help reveal the zoning and internal detail, while softer reflected light may give the colours a more subdued appearance. Preserving the crystal in its present form retains the complete progression from its golden lower body to its contrasting crown.

LAPIDARY POTENTIAL:
The bicolour distribution provides an interesting starting point for a specialist lapidary assessment. Any proposed design would need to consider the position and depth of both colour zones, with particular attention to whether the golden and violet pink regions could remain visibly distinct in a finished gem. Internal features, available proportions and cleavage orientation would also guide that assessment.

The existing crystal already presents its colour contrast in a coherent and attractive form. Keeping it intact preserves the full relationship between the elongated golden prism and its violet pink crown, making specimen conservation a compelling alternative to faceting.

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