Ocean Jasper Moon — Orbicular Chalcedony (Quartz Variety)

Ocean Jasper Moon — Orbicular Chalcedony (Quartz Variety)

This carved moon is made from ocean jasper, a variety of orbicular chalcedony composed primarily of microcrystalline quartz (SiO₂).

The piece displays a mix of earthy greens, creams, soft browns, and muted pink tones, with well-defined orbicular “eye” formations scattered throughout. These circular patterns form through radial crystal growth as silica precipitates in layers within volcanic cavities.

There are also areas of subtle druzy-like texture where microcrystalline quartz has formed across small pockets, adding natural surface detail and contrast against the polished sections.

The crescent moon shape enhances the visual flow of the orbicular patterns, giving a clean, sculptural finish while still showcasing the raw geological features.

Key Features

• Material: Chalcedony (Ocean Jasper)

• Chemical Composition: SiO₂

• Colour: Green, cream, beige, brown, soft pink tones

• Crystal Habit: Microcrystalline (chalcedony)

• Formation: Silica-rich deposition in volcanic cavities

• Transparency: Opaque

• Lustre: Waxy

• Feature Highlights:

  - Distinct orbicular “eye” formations

  - Natural colour banding and zoning

  - Subtle druzy-style surface textures

  - Smooth carved moon shape

  - Unique patterning on every face

Dimensions

• Height: 8.5 cm

• Width: 6 cm

• Weight: 97 grams

Geological & Scientific Notes

Ocean jasper is a form of orbicular chalcedony, meaning it is composed of extremely fine intergrown quartz crystals.

The circular “eye” patterns are created by spherulitic growth, where silica crystallises outward from a central point in layered formations. Over time, repeated pulses of silica-rich fluid create the concentric structures seen in the stone.

Unlike crystalline quartz (which forms visible crystals), chalcedony forms as a dense, microcrystalline mass, giving it a smoother, more uniform appearance.

Ocean jasper typically forms in volcanic environments where cavities allow silica-rich solutions to deposit and slowly solidify.

Condition

• Smooth polished finish

• Well-defined orbicular structures

• Natural surface textures present

• Minor natural pits typical of material

• No major damage observed

Care Instructions

• Mohs hardness: ~6.5–7

• Durable but avoid hard impacts

• Clean with a soft cloth

• Avoid harsh chemicals

• Store separately to prevent surface wear