Certified 64.60ct Natural Aquamarine Crystal on Feldspar Matrix – Pakistan Blue Beryl Specimen

GLverify.com Certificate No: 901231859465

Certified Value: US $110.00

Specimen Type: Natural Aquamarine Crystal with Feldspar Matrix
Weight: 64.60 Carats
Origin: Gilgit–Baltistan Pegmatite Belt, Northern Pakistan
Primary Mineral: Aquamarine (Blue Beryl – Be₃Al₂Si₆O₁₈)
Associated Minerals: Feldspar (likely Albite), minor micaceous micro-inclusions
Condition: Terminated aquamarine fragment exhibiting strong vertical striations, partial etching, and a well-attached matrix section
Recommended Use: Collector Display, Mineral Study, Lapidary Reference

1. Mineral Identification
Primary Mineral – Aquamarine (Beryl Variety)
This Specimen shows all hallmark characteristics of natural aquamarine from the Pakistani pegmatites:
Color: Soft pastel blue with excellent uniformity
Transparency: Translucent approaching semi-transparent
Crystal Habit: Elongated hexagonal prism with strongly defined longitudinal striations
Luster: Vitreous along crystal faces, matte where naturally etched

Internal Structure:
Internal channels
Growth tubes

Minor natural fractures typical of pegmatite-extracted beryl

The clean, icy coloration and structure indicate an untreated natural aquamarine.

Secondary Mineral – Feldspar (Albite)
The white matrix attached to the base is consistent with Albite, verified by:
White to off-white coloration
Granular to sub-tabular texture
Common association with beryl in pegmatites

This matrix attachment enhances authenticity and geological provenance.

2. Structural Description
Crystal Form
The aquamarine presents as a well-preserved prism, though partially fractured along the top.
Vertical striations run almost the full length of the crystal, indicating natural growth direction.
Partial termination present but not fully intact, which is typical for mechanically extracted pegmatite pieces.

Surface Characteristics
Smooth faces on several sides
Natural etching patterns on one face, likely due to hydrothermal fluid contact while in the pocket
Minor clay weathering traces around the matrix region
Strong aesthetic contrast between the blue aquamarine and white feldspar

Color & Light Behavior
Beautiful light-blue tone with excellent consistency
Mild internal reflections and silky sheen in some areas due to micro-fractures and growth textures

3. Geological Context
This Specimen originates from the northern Pakistan high-altitude pegmatites, one of the world’s premier sources for aquamarine. Pegmatites in these regions form:
Deep within granitic intrusions
Under slow cooling conditions

Enriched with volatile elements like beryllium, fluorine, lithium, and water

Aquamarine forms when beryllium-bearing fluids crystallize inside pegmatite cavities. Feldspar (albite) commonly surrounds or encapsulates beryl crystals, explaining the attached matrix.

The clarity, coloration, and structure are highly consistent with specimens from:
Shigar Valley
Haramosh Range
Skardu pegmatite zones