AAA Diamond Apopyllite on Blue Chalcedony
AAA Diamond Apopyllite on Blue Chalcedony
AAA Diamond Apophyllite on Blue Chalcedony
Overview
This compact, high-grade specimen features a cluster of well-formed “diamond” apophyllite crystals rising from a subtle blue chalcedony base. The piece displays excellent clarity and strong natural reflectivity, with multiple terminated crystals creating a layered, light-catching structure.
Visible within the formation are circular mineral inclusions embedded in the chalcedony, formed during early growth stages and preserved as later crystals developed over them. These internal features add depth and make the piece visually distinctive from standard apophyllite clusters.
Key Features
Minerals: Apophyllite on Chalcedony (Quartz variety)
Grade: AAA (clean crystal structure, strong lustre, defined terminations)
Colour:
Colourless to very pale blue apophyllite
Soft blue-grey chalcedony base
Dark circular inclusions within chalcedony
Crystal System (Apophyllite): Tetragonal
Formation: Terminated apophyllite crystals on microcrystalline chalcedony matrix
Lustre: High vitreous (strong light reflection)
Transparency: Transparent to translucent
Dimensions
Weight: 45 grams
Size: 5.5 cm x 3.7 cm
Geological & Scientific Notes
This specimen formed in a volcanic cavity where silica-rich fluids deposited minerals over time:
Chalcedony (SiO₂) formed first as a microcrystalline base, sometimes trapping earlier mineral inclusions
Apophyllite crystallised later from hydrothermal fluids, forming sharp tetragonal crystals with reflective faces
The circular inclusions visible in this piece are likely early-stage mineral deposits within the chalcedony, later exposed as surrounding crystal growth developed. These features provide insight into the sequential nature of mineral formation.
Why This Piece Stands Out
Clean, well-terminated apophyllite crystals
Strong sparkle and light reflection
Compact, display-friendly size
Unique circular inclusions adding visual interest
AAA grade with balanced formation
Care & Handling
Handle carefully — crystals can be brittle
Avoid prolonged water exposure
Clean gently with a dry brush
Store separately to protect crystal edges