Certified 110.05ct Natural Aquamarine Crystal on Feldspar Matrix – Pakistan Pegmatite Mineral Specimen

GLverify.com Certificate No: 901240854561

Certified Value: US $145.00

Specimen Type: Natural Aquamarine Crystal with Minor Muscovite & Feldspar
Weight: 110.05 Carats
Locality: Pakistan (likely Shigar Valley or Gilgit–Baltistan pegmatite zone)
Primary Mineral: Aquamarine (Blue Beryl)
Associated Minerals: White Feldspar, Silvery Muscovite
Crystal Habit: Hexagonal prismatic aquamarine with stepped and etched growth faces
Condition: Naturally terminated surfaces with partial contact zones and matrix attachment
Geological Environment: Pegmatitic cavity formation within high-grade granitic rocks of northern Pakistan
Collectible Value: Excellent example of pale blue aquamarine with natural matrix textures and intact crystal geometry.

1. Identification of Visible Minerals
🔹 Aquamarine (Blue Beryl) – Primary Mineral
The images show a pale icy-blue aquamarine with:
Distinct vertical striations along the prism faces
Matte, etched surfaces common to pegmatite-weathered aquamarine
A blocky hexagonal geometry visible in several angles
Internal water-clear areas mixed with slightly frosted zones

These characteristics are classic for aquamarine sourced from Pakistan’s pegmatites.

🔹 Feldspar (White–Off-White Matrix)
Several areas show chalky, white granular matrix, which is feldspar—most commonly:
Albite or
Microcline
This feldspar forms the matrix base from which the aquamarine crystal was growing.

🔹 Muscovite Mica (Small Silvery Flakes)
In several areas, thin silvery flakes appear embedded in the aquamarine or matrix.
These are muscovite mica, extremely common in Pakistani pegmatite pockets.

2. Structural Description
Crystal Habit & Form
The aquamarine shows a hexagonal prismatic shape typical for beryl.
Several growth faces display stepped etching, resulting from natural hydrothermal dissolution.
Minor edge wear indicates normal pocket extraction without tumbling or polishing.

Transparency & Color
The color is a soft glacier-blue, highly desirable for natural aquamarine.
Transparency ranges from translucent to semi-transparent, with internal structural zoning.

Surface Features
Natural striations run parallel to the crystal’s vertical axis.
The termination is irregular, suggesting:
Partial natural breakage inside the pocket, OR
Growth interruption by surrounding feldspar.

Matrix Attachment
Feldspar matrix is firmly attached on multiple sides, confirming authenticity and natural origin.
Small mica plates further support pegmatitic formation.

3. Geological Context (Pakistan Origin)
This Specimen originates from the Himalayan granitic pegmatite belts of northern Pakistan, especially areas like:
Shigar Valley
Skardu Region
Haramosh / Dassu Pegmatites

These regions produce world-class aquamarines due to:
Deep crustal granitic intrusions
High concentrations of beryllium-rich fluids
Slow cooling conditions that allow large crystal growth
Presence of feldspar, quartz, mica, and tourmaline—classic pegmatite assemblage

This specimen displays all hallmarks of a genuine Pakistani pegmatite aquamarine, including matrix characteristics and crystal texture.

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