Natural Amethyst · 198.544 ct · Enhydro Amethyst · crystal

$167.76

Natural Enhydro Amethyst weighing 198.544 ct, fashioned into an irregular geometric faceted crystal measuring approximately 27.7 × 26.4 × 28.9 × 26.1 mm. The transparent to locally included purple Quartz displays natural colour zoning, internal veils and fracture-related structures, together with two distinct fluid inclusions—one stable and one visibly mobile when the specimen is tilted. Unheated and untreated, this unusual crystal is particularly suited to collectors seeking a rare natural inclusion specimen.

1 in stock

NGB Reference: NGB-000828 SKU: RO-AMEH024PU-001-153 Category: Brand:
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This remarkable natural Amethyst weighs 198.544 carats and contains two clearly distinguishable fluid inclusions, making it an unusual collector specimen within the Quartz family. One inclusion remains visually stable, while a second displays visible movement when the crystal is tilted, producing the characteristic behaviour commercially associated with an enhydro crystal.

The specimen measures approximately 27.7 × 26.4 × 28.9 × 26.1 mm and has been fashioned into an irregular geometric faceted form that allows its internal structures to be examined from several directions. Its body colour ranges from pale violet and softly coloured transparent Quartz to locally deeper purple Amethyst zones, creating considerable internal colour variation across the specimen.

The polished facets provide a vitreous surface lustre and act almost as viewing windows into the crystal. Beneath them, natural growth structures, veils, healed fissures, internal fractures and colour zoning remain clearly visible. These internal features create a complex three-dimensional appearance and emphasise that the specimen has been preserved for its unusual natural inclusion structure rather than for conventional gemstone clarity.

The principal feature of this Amethyst is its liquid-bearing internal cavities. Fluid inclusions form when tiny quantities of geological fluid become enclosed within a mineral during crystal growth or during later healing of internal fractures. As the host crystal and enclosed fluid cool, different phases may develop within the cavity, including a visible gas bubble. In certain inclusions this bubble can move as the crystal is rotated, making the internal fluid system observable without destructive testing.

This specimen contains 𝐨𝐧𝐞 𝐬𝐭𝐚𝐛𝐥𝐞 𝐞𝐧𝐡𝐲𝐝𝐫𝐨 𝐢𝐧𝐜𝐥𝐮𝐬𝐢𝐨𝐧 𝐚𝐧𝐝 𝐨𝐧𝐞 𝐦𝐨𝐯𝐢𝐧𝐠 𝐞𝐧𝐡𝐲𝐝𝐫𝐨 𝐢𝐧𝐜𝐥𝐮𝐬𝐢𝐨𝐧. The moving inclusion is particularly significant from a collector perspective because the change in position can be observed when the specimen is carefully tilted.

Although fluid inclusions can preserve samples of geological fluids associated with the formation history of their host mineral, the precise chemical composition and geological age of the fluid enclosed within this particular Amethyst have not been analytically determined. It should therefore be regarded as a naturally preserved fluid inclusion rather than assigning a specific age to the enclosed liquid.

The transparent to locally included Amethyst body allows the fluid-bearing structures to remain observable while still displaying attractive purple colour zoning. Rather than detracting from the specimen, the substantial internal characteristics are central to its scientific and collector interest.

No indications of heating or other treatment have been recorded. The specimen is presented as 𝐮𝐧𝐡𝐞𝐚𝐭𝐞𝐝 𝐚𝐧𝐝 𝐮𝐧𝐭𝐫𝐞𝐚𝐭𝐞𝐝 and is the exact natural crystal shown in the product photographs.

Combining a substantial 198.544 ct weight, natural purple Amethyst colour, transparent viewing areas and two observable fluid inclusions—one stationary and one mobile—this specimen represents an uncommon and highly individual collector crystal. Its appeal lies not only in its colour and polished geometric form, but particularly in the opportunity to observe a naturally enclosed geological fluid system preserved within the Quartz itself.

Overall Score: 95/100

NGB Grade: Exceptional

Quality Evaluation

Color19/20
Phenomenon19/20
Natural Characteristics19.0/20
Inclusion Profile19.0/20
Overall Rough Quality19.0/20

Evaluation Notes

This Enhydro Amethyst presents an exceptional collector-quality profile, combining attractive purple colour zoning with strong transparency and two clearly distinguishable natural fluid inclusions.

The presence of both one stable inclusion and one mobile inclusion is particularly significant, with the moving internal fluid feature providing strong visual and scientific interest when the specimen is tilted. Natural veils, healed fissures, internal cavities and reflective structural features remain visible, but these characteristics are integral to the specimen’s geological interest rather than conventional clarity defects.

The combination of rarity, observable fluid-inclusion behaviour, transparency, colour zoning, preserved internal structure and overall collector appeal supports an excellent 95/100 assessment.

Species

Quartz

Gemstone Variety

Amethyst

Gemstone Sub-variety

Enhydro Amethyst

Color

Purple

Treatment

Unheated, Untreated

Transparency

Transparent

Optical Phenomenon

enhydro

Gemological Properties

Carat Weight198.544 ct
Dimensions27.7 × 26.4 × 28.9 × 26.1 mm
TransparencyTransparent
ClarityN/A
Refractive Index1.544–1.553
Hardness7 Mohs
Birefringence0.009
Crystal SystemTrigonal
LusterN/A
Color Descriptionpale violet and softly coloured transparent Quartz to locally deeper purple Amethyst zones
Transparency NotesTransparent. The recorded transparency is considered together with the specimen’s individual internal characteristics.
Natural CharacteristicsTransparent to locally included Amethyst with pale violet to deeper purple colour zoning, natural growth structures, internal veils, healed fissures and fracture-related features. Two distinct fluid inclusions are present within the crystal, including one stable inclusion and one mobile inclusion with visible movement when the specimen is tilted. Additional internal cavities, reflective planes and minor surface-reaching features contribute to the specimen’s complex natural structure.

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