Certified 122.35ct Natural Pakistani Aquamarine Crystal – Untreated Blue Beryl with Feldspar Matrix

GLverify.com Certificate No: 901217651650

Certified Value: US $145.00

Specimen Type: Natural Aquamarine Crystal with Minor Host Mineral Inclusions
Weight: 122.35 Carats
Origin: Gilgit–Baltistan Region, Northern Pakistan (Pegmatite Source)
Primary Mineral: Aquamarine (Blue Beryl – Be₃Al₂Si₆O₁₈)
Associated/Visible Minerals: Feldspar-rich host (likely Albite/Orthoclase), minor clay-weathered pegmatite material
Overall Condition: Partially terminated aquamarine with natural etching, surface growth features, and traces of pegmatite host rock
Specimen Use: Collecting, Display, Lapidary Potential, Study of Pegmatite Mineralization

1. Mineral Identification
Primary Mineral: Aquamarine (Beryl variety)

Visible features confirming aquamarine:
Classic pale blue to blue-green coloration typical of Pakistani beryl.
Strong longitudinal striations running parallel to the crystal’s c-axis.
Hexagonal prismatic structure visible on edges and faces.
Vitreous to slightly matte luster due to natural etching.

The crystal appears natural, untreated, and displays the typical clarity range for Pakistani aquamarine—translucent with internal veils and growth tubes.

Secondary Minerals & Host Rock
The beige-to-white surface material adhered to portions of the aquamarine appears to be:
Albite or Orthoclase Feldspar: Common pegmatite host mineral.

Weathered Clay/Pegmatitic Alteration Products: These occur when feldspar alters along fractures or crystal boundaries.

No mica, tourmaline, or black inclusions are strongly visible in this specimen.

2. Structural Description
Crystal Habit
Prismatic beryl crystal, with clearly defined side faces and a partially intact termination.
Distinct vertical striations indicating proper crystallographic growth.
Some faces show natural etching and dissolution textures, common in pegmatite-exposed aquamarine.
Bottom termination area appears uneven, likely from natural matrix breakage during extraction.

Color & Clarity
Uniform light pastel blue, characteristic of aquamarine formed under moderate iron concentrations.
Clarity: Semi-translucent to translucent with internal micro-fractures and growth patterns.
Color zoning is minimal but faint variations are visible.

Surface & Morphology
A mix of smooth natural crystal faces and matte etched surfaces.
Residual feldspar indicates the crystal was originally embedded deeply within a pegmatitic cavity.
No evidence of polishing or human modification.

3. Geological Context
This Specimen is consistent with aquamarine sourced from Gilgit–Baltistan, Pakistan, especially regions like:

Shigar Valley
Haramosh
Skardu Pegmatite Zones

These areas are globally famous for world-class pegmatites producing:
Aquamarine
Cleavelandite (Albite variety)
Muscovite Mica
Tourmaline
Quartz Varieties

Aquamarine in these pegmatites grows when beryllium-rich fluids interact with aluminum-silicate pegmatitic melts, often in the presence of iron impurities that give the gemstone its blue coloration.

The beige feldspar matrix further supports the pegmatite origin, as feldspar is one of the three major pegmatite components (feldspar, quartz, mica).

Condition & Authenticity Assessment
100% natural aquamarine
Unheated and untreated
No dyeing, coating, or stabilization
Retains original growth surfaces and internal crystal features

Suitable for:
Mineral specimen collections
Display pieces
Educational or certification purposes