Natural Amethyst geode · Sphere · 5.2 cm · deep purple

$55.88

Natural Uruguayan Amethyst geode sphere measuring 50.1 mm, featuring a richly coloured open crystal cavity with deep purple Amethyst, natural lavender zoning and attractive mineral banding. The polished rounded exterior contrasts beautifully with the sparkling crystalline interior, creating a distinctive collector and decorative specimen.

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NGB Reference: NGB-000715 SKU: GE-AMDR025PU-003-078 Category: Brand:
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This natural Uruguayan Amethyst geode sphere combines a rounded polished exterior with an open crystalline cavity filled with richly coloured purple Amethyst crystals. The interior displays a beautiful variation from softer lavender tones along the edges to deeper purple crystal growth toward the centre, creating strong depth and natural visual contrast.

The open geode structure preserves the specimen’s natural crystal formation, while the rounded outer shape gives the piece a refined decorative character. Subtle mineral banding around the cavity forms a natural transition between the dark exterior matrix and the sparkling Amethyst interior.

Uruguay is particularly renowned for Amethyst deposits capable of producing intensely saturated purple crystals, and this specimen shows the characteristic rich colour and compact crystal growth associated with the material.

With a diameter of approximately 50.1 mm, the sphere is substantial enough to display as an individual mineral specimen while remaining suitable for a cabinet, desk, shelf or curated gemstone collection. The numerous crystal faces interact beautifully with changing light, giving the interior a lively brilliance from different viewing angles.

Each natural geode develops its own cavity, crystal distribution, colour zoning and mineral structure, making this piece completely unique.

Overall Score: 90/100

NGB Grade: Excellent

Quality Evaluation

Color19.0/20
Material Quality18.0/20
Natural Characteristics17.0/20
Shape, Symmetry & Polish18.0/20
Overall Appeal18.0/20

Evaluation Notes

A high-quality Uruguayan Amethyst geode sphere with strong deep-purple colour, dense crystal coverage and an attractive natural cavity displaying excellent visual depth and sparkle. The contrast between the polished outer form and crystalline interior is particularly appealing. Minor irregularities in crystal size, surface structure and colour distribution are natural to the specimen and prevent a higher score. Overall, an impressive and highly decorative collector-quality piece.

Species

Quartz

Gemstone Variety

Amethyst

Color

Purple

Treatment

Unheated, Untreated

Transparency

Translucent

Origin

Uruguay

Gemological Properties

Dimensions50,1 mm diameter
TransparencyTranslucent
ClarityN/A
Hardness7 Mohs
Crystal SystemTrigonal
LusterN/A
Color Descriptiondeep purple
Transparency NotesTranslucent Amethyst crystals within an opaque natural geode matrix.
Natural CharacteristicsNatural open geode cavity with dense Amethyst crystal growth, irregular crystal faces, natural colour zoning from lavender to deep purple, subtle matrix banding, and minor surface variations consistent with natural geological formation.

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