Natural Amethyst Crystal · 40.1 × 41.4 × 29.0 mm · Decor

$19.93

Natural untreated Amethyst crystal measuring approximately 40.1 × 41.4 × 29.0 mm, displaying medium violet to deeper purple tones with lighter lilac zoning and contrasting ochre to honey-brown iron-stained areas. The specimen retains visible natural crystal faces, internal veils and growth-related features, giving it a distinctive geological character and strong decorative appeal.

1 in stock

NGB Reference: NGB-000515 SKU: RO-AMTO026PU-003-539 Category: Brand:
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This natural Amethyst crystal measures approximately 40.1 × 41.4 × 29.0 mm and is presented as an untreated decorative specimen with a strong natural crystal character. The piece displays medium violet to deeper purple tones with lighter lilac zoning, creating attractive variation across the crystal body.

Several natural crystal faces and growth structures remain clearly visible, while parts of the specimen show irregular natural surfaces and internal features associated with its formation. Warm ochre- to honey-brown iron-stained areas occur locally along the outer surface and within natural recesses, producing a striking contrast against the purple Amethyst.

The crystal shows a combination of translucent and more transparent areas, with internal veils, fractures and growth-related features contributing to its individual appearance. These natural characteristics enhance the geological character of the specimen rather than detracting from its decorative value.

Its substantial proportions and visible crystal morphology make it well suited for mineral display, interior decoration, crystal collections or as a distinctive natural object for a desk, shelf or cabinet. The combination of purple colour zoning, natural surface texture and contrasting iron-stained areas gives this Amethyst a unique and unmistakably natural presentation.

The specimen is presented as untreated, preserving its original mineralogical character and natural formation features.

Overall Score: 87.0/100

NGB Grade: Very Good

Quality Evaluation

Color17.0/20
Clarity16.0/20
Overall Appeal17.0/20
Natural Characteristics19.0/20
Overall Rough Quality18.0/20

Evaluation Notes

A very good natural Amethyst crystal with attractive medium violet to deeper purple colour, visible lilac zoning and a strong overall geological character. The specimen retains several well-defined natural crystal faces together with irregular growth areas that give it an authentic and individual appearance.
The colour is appealing and shows good variation across the specimen, with deeper purple zones providing contrast against lighter translucent areas. Natural internal veils, fractures and growth-related features are clearly present and reduce overall transparency, but they remain consistent with the character of an untreated decorative crystal.
The specimen also displays visible ochre- to honey-brown iron staining and mineral residue along natural recesses and surface areas. These features add visual contrast and reinforce its natural origin, although they reduce the overall visual purity compared with cleaner collector-grade Amethyst specimens.
The crystal form is interesting and suitable for display, with a combination of defined faces, contact areas and natural surface irregularities. Its proportions give it good decorative presence, while the untreated condition preserves the specimen’s original mineralogical character.
Overall, the combination of attractive purple colour, natural crystal morphology and strong decorative appeal supports a very good evaluation, with the internal fractures, iron staining and irregular growth areas preventing a higher score.

Species

Quartz

Gemstone Variety

Amethyst

Color

Purple

Treatment

Unheated, Untreated

Transparency

Transparent

Gemological Properties

Dimensions40.1 × 41.4 × 29.0 mm
TransparencyTranslucent
ClarityNatural rough material
Refractive Index1.544–1.553
Specific Gravity2.65
Hardness7 Mohs
Birefringence0.009
Crystal SystemTrigonal
Dispersion0.013
LusterVitreous
Color Descriptionmedium violet to deep purple with lighter lilac zoning
Transparency Notesa combination of translucent and more transparent areas
Natural CharacteristicsNatural growth zoning, internal veils and fracture-related features are visible throughout the crystal, together with irregular growth surfaces and partially developed crystal faces. Local ochre- to honey-brown iron staining and mineral residue occur along natural recesses and outer surfaces, creating warm contrast against the violet to lilac Amethyst body colour. Minor edge irregularities, contact areas and surface imperfections are consistent with the specimen’s natural formation and extraction history. These features contribute to the crystal’s geological character and confirm its individuality as a natural decorative specimen.

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