AAA Diamond Apophyllite on Blue Chalcedony – High Clarity Terminations

AAA Diamond Apophyllite on Blue Chalcedony – High Clarity Terminations

A high-grade diamond apophyllite cluster set on blue chalcedony, featuring sharp, glassy terminations with strong natural reflectivity and internal light play.

This piece shows a standout primary apophyllite crystal with well-defined faces and visible growth striations, surrounded by smaller secondary crystals across the matrix. The base consists of blue chalcedony, providing contrast between the microcrystalline silica and the larger, fully formed apophyllite crystals.

The clarity and structure here place this firmly in AAA grade, with excellent transparency, clean edges, and strong geometric formation.

✨ Key Features

📍 AAA grade apophyllite with high clarity

📍 Prominent main crystal with sharp terminations

📍 Secondary crystal cluster growth across matrix

📍 Natural vertical striations on crystal faces

📍 Blue chalcedony base (microcrystalline quartz)

📍 Strong light reflection and internal sparkle

📏 Dimensions

Size: 4 cm x 3 cm

Weight: 41 grams

🔬 Geological & Scientific Notes

Apophyllite Group

Chemical Formula: KCa₄Si₈O₂₀(F,OH)·8H₂O

Mineral Class: Phyllosilicate

Crystal System: Tetragonal

Hardness: 4.5–5 (Mohs)

Lustre: Vitreous (highly reflective)

Transparency: Transparent to translucent

Apophyllite commonly forms in volcanic cavities, where mineral-rich fluids allow slow crystal growth, producing well-defined geometric structures.

Chalcedony Base

Chemical Formula: SiO₂

Structure: Microcrystalline quartz

Provides the host surface for crystal growth

🧪 Formation Insight

This combination forms when:

Silica-rich fluids create a chalcedony base

Later mineral-rich fluids deposit apophyllite

Crystals grow into open space, forming sharp terminations

🧼 Care

Handle with care (apophyllite is softer than quartz)

Avoid knocks and pressure on crystal points

Clean gently with water and a soft brush

Do not use harsh chemicals

💬 Honest Note

This is a natural, untreated specimen.

Minor inclusions, internal fractures, and matrix features are part of natural crystal growth and not defects.