This Obsidian Mineral Egg is a genuine natural volcanic glass specimen, shaped and polished into a smooth egg form. Carefully selected for its deep black colour and glossy surface, this piece highlights the dramatic appearance of naturally formed obsidian. The photograph provided shows the exact specimen you will receive. Please refer to the images for full sizing and scale details.
This crystal includes a Certificate of Authenticity lifetime guarantee generic card confirming its authenticity and geological origin.
Rock Name: Obsidian
Rock Type: Igneous (Extrusive Volcanic Glass)
Composition: Predominantly Silicon Dioxide (SiO₂)
Structure: Amorphous (Non-crystalline)
Hardness: Approximately 5–5.5 on the Mohs scale
Lustre: Vitreous (Glassy)
Transparency: Opaque to slightly translucent on thin edges
Obsidian is not a crystalline mineral but a naturally occurring volcanic glass. It forms when silica-rich lava cools extremely rapidly, preventing atoms from arranging into a regular crystal lattice. This rapid quenching process preserves the molten material in a glassy, amorphous state.
Its high silica content gives obsidian its sharp conchoidal fracture and characteristic glossy surface.
Obsidian forms in volcanic environments associated with rhyolitic lava flows. When lava rich in silica erupts and cools quickly upon exposure to air or water, crystallisation is inhibited. As a result, the molten material solidifies into volcanic glass rather than forming crystalline minerals such as quartz or feldspar.
Gas content and cooling conditions can influence the final appearance of obsidian. While some varieties contain inclusions or flow banding, classic black obsidian displays a uniform deep colour caused by minute iron and magnesium content within the glass.
Obsidian deposits are commonly associated with regions of past or present volcanic activity, making each specimen a direct product of intense geological processes.
This specimen has been shaped and polished into an egg form, enhancing its smooth surface and reflective sheen.
Notable characteristics may include:
The egg shape is popular for display due to its balanced, curved form. The polishing process highlights the natural glassy lustre while preserving the inherent structure of volcanic glass.
No artificial colouring or enhancement is implied; the colour and appearance are natural properties of obsidian.
Obsidian mineral eggs are widely appreciated by collectors of igneous rocks and volcanic materials. This specimen is suitable for:
In various traditions, obsidian has been traditionally associated with protection and grounding in a spiritual sense. This listing focuses strictly on geological characteristics and natural formation.
The polished egg form makes it an attractive and tactile display item for any collection.
This Obsidian Mineral Egg has been carefully selected for surface quality, colour depth and overall presentation. The image shown is of the exact specimen you will receive.
Included with your purchase is a Certificate of Authenticity lifetime guarantee generic card confirming this is a genuine natural obsidian specimen.
A striking example of rapidly cooled silica-rich lava shaped into a refined decorative form, this authentic Obsidian Mineral Egg combines volcanic origin, glossy natural texture and timeless presentation in one distinctive collector’s piece.