Black Obsidian Rough Large D (1.22kg) – Large Natural Volcanic Glass
Dark, substantial and beautifully raw, the Black Obsidian Rough Large D (1.22kg) is an individual unpolished piece measuring approximately 18 x 11cm. Its deep black colouring and rugged natural surfaces give it a bold presence, while the larger size provides plenty of texture and irregular detail to explore from different angles.
At over 1kg, this is a genuine statement piece for a crystal shelf, mineral collection or natural stone display. Explore more formations and crystal forms in our Crystal Shapes collection.
Product Details
- Stone:Â Black Obsidian
- Form:Â Large rough piece
- Weight: Approx. 1.22kg
- Size: Approx. 18 x 11cm
- Finish: Rough / unpolished
- Colour: Deep black
- Piece:Â Large D
- Material: Natural volcanic glass
- Natural variations in texture, shape, markings and edges are part of the individual piece
Black Obsidian Rough Large – 1.22kg of Raw Volcanic Character
At approximately 18cm long, this rough piece has enough scale to make its natural shape part of the display. The unpolished exterior keeps the focus on irregular faces, edges and changing surface textures rather than a deliberately carved or smoothed form.
For more substantial unpolished specimens, browse our Rough Crystal Pieces – Large collection.
Black Obsidian Isn’t Actually a Crystal
Although Black Obsidian is commonly grouped with crystals in shops and collections, geologically it is volcanic glass. It forms when silica-rich molten rock cools so rapidly that atoms do not have enough time to organise into the repeating crystalline structure found in minerals such as quartz.
That unusual origin gives Obsidian a very different story from many of the stones displayed alongside it. Discover more stones organised by type in our Crystal Names collection.
Did You Know? Obsidian Can Break to an Exceptionally Sharp Edge
Because Obsidian is glass rather than a crystalline mineral, it can fracture in smooth curved surfaces known as conchoidal fractures. These breaks can produce remarkably fine, sharp edges.
This property is one reason Obsidian was used historically to make cutting tools and projectile points in different parts of the world. It also means rough pieces should be handled thoughtfully, as naturally fractured edges can sometimes be sharp.
Why Rough Black Obsidian Can Look Different in Changing Light
At first glance, a large rough piece may appear almost uniformly black. Move it through stronger light, however, and the uneven surface can reveal subtle differences in sheen, texture and depth across different faces.
Freshly fractured areas may reflect light differently from more weathered or textured surfaces, giving an apparently simple black stone far more visual variation when examined closely.
Black Obsidian Meaning & Modern Crystal Traditions
Within modern crystal traditions, Black Obsidian is commonly associated with grounding, protection, strength and self-reflection. Its dark appearance and volcanic origins have contributed to its popularity in contemporary metaphysical collections.
Explore more forms of the stone in our Black Obsidian collection. These metaphysical associations are traditional beliefs rather than scientifically established effects.
How to Display a Large Rough Black Obsidian Piece
The approximately 18 x 11cm proportions make this piece useful as a strong visual anchor in a mineral or crystal display. Its near-black colouring creates striking contrast beside pale stones such as Rose Quartz, Selenite and Clear Quartz, while its rough texture works equally well among other natural specimens.
Because it weighs approximately 1.22kg, place it on a stable surface. Rough Obsidian can have sharp or irregular edges, so handle and position it carefully rather than dragging it across furniture or delicate surfaces.
Frequently Asked Questions
How much does Black Obsidian Rough Large D weigh?
It weighs approximately 1.22kg.
What size is the rough Black Obsidian?
It measures approximately 18 x 11cm.
Is Black Obsidian a crystal?
Geologically, Obsidian is a natural volcanic glass rather than a crystalline mineral, although it is commonly grouped with crystals in retail and collecting.
Is this piece polished?
No. It is a rough, unpolished piece, retaining its irregular natural surfaces and edges.
Can rough Black Obsidian have sharp edges?
Yes. Obsidian can fracture to very fine edges, so rough specimens should be handled carefully.
What is Black Obsidian traditionally associated with?
Within modern crystal traditions, Black Obsidian is commonly associated with grounding, protection, strength and self-reflection. These are traditional and metaphysical associations rather than scientifically established effects.
Is this listing for the individual piece shown?
Yes. This listing is for the individual Black Obsidian Rough Large D, weighing approximately 1.22kg and measuring approximately 18 x 11cm.
Perfect For
- Black Obsidian collectors
- Large rough stone displays
- Volcanic glass collections
- Natural mineral displays
- Dark crystal collections
- Unpolished stone lovers
- Statement shelf or tabletop pieces
Over a kilogram of volcanic glass in its wonderfully rugged form. This approximately 18 x 11cm Black Obsidian piece combines dramatic black colouring, natural texture and the unmistakable character of a large unpolished specimen.
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