Black Obsidian Rough Large F (980g)

Black Obsidian Rough Large F – Natural Volcanic Glass Specimen 980g

The Black Obsidian Rough Large F is a substantial natural specimen weighing approximately 980g and measuring around 17 x 11cm. Left in its rough form rather than polished into a decorative shape, it showcases the naturally dark, dramatic character that makes Black Obsidian such a striking addition to a crystal collection.

Black Obsidian is a natural volcanic glass, formed when silica-rich molten rock cools so rapidly that crystals have little or no opportunity to develop. The result is the distinctive glassy material we know as obsidian.

At almost a kilogram, this is a sizeable individual piece suited to display, crystal collections, altars or anyone who simply prefers their crystals a little less polished and considerably more geological.

Explore more pieces in our Black Obsidian collection.

Product Details

• Product: Black Obsidian Rough Large F
• Material: Natural Black Obsidian
• Type: Natural volcanic glass
• Form: Rough specimen
• Size: Approx. 17 x 11cm
• Weight: Approx. 980g
• Colour: Predominantly black
• Finish: Natural rough form
• Individual specimen: You will receive the piece represented as Black Obsidian Rough Large F
• Includes a crystal meaning card

As a natural rough specimen, irregular surfaces, edges, textures, markings and variations are part of the piece rather than imperfections.

What Is Black Obsidian?

Black Obsidian is fascinating because, despite commonly being sold alongside crystals, it isn’t technically a crystalline mineral.

It is volcanic glass.

Obsidian forms when suitable volcanic material cools extremely quickly. Because the cooling happens so rapidly, an ordered crystal structure doesn’t have enough time to form in the way it would in many crystalline minerals.

That rapid geological process produces a material with a characteristically glassy structure and often a deep black appearance.

Freshly broken obsidian can produce very sharp edges because of the way the glass fractures, which is one reason obsidian has also played an important role in human history. It was fashioned into cutting tools and other objects by numerous cultures long before modern metal tools became available.

Today, Black Obsidian is collected for its geology, dramatic appearance and long-standing place within crystal and metaphysical traditions.

Why Choose a Large Rough Black Obsidian?

Polishing Black Obsidian can create a beautifully smooth, reflective surface, but rough Obsidian shows another side of the material entirely.

Its irregular natural form gives you a much stronger sense of the geological material itself.

Instead of being shaped into a sphere, heart, point or carving, the stone retains a raw appearance with natural contours and broken surfaces.

At approximately 980g, Large F also has enough presence to become a focal specimen rather than disappearing amongst smaller crystals.

A piece of this size works particularly well:

• As a display specimen
• In a larger crystal collection
• On an altar or meditation space
• Amongst geological specimens
• As part of darker or gothic décor
• Alongside polished Black Obsidian for comparison
• As a substantial crystal gift

Browse our wider Crystals collection for other shapes, stones and natural specimens.

Black Obsidian Meaning & Traditional Associations

Within modern crystal traditions, Black Obsidian is especially well known as a stone associated with protection and grounding.

Traditional and contemporary metaphysical associations commonly include:

• Protection
• Grounding
• Strength
• Truth
• Self-reflection
• Releasing what no longer serves you
• Personal growth
• Transformation
• Creating stronger personal boundaries

Its deep black appearance and volcanic origins have also helped establish Black Obsidian as a popular choice for people drawn to crystals associated with shadow work and introspection.

Shadow work is generally used to describe a reflective practice of examining parts of ourselves, our behaviours or emotional patterns that we may normally avoid or overlook.

A Black Obsidian specimen can therefore be chosen as a symbolic companion for reflection or intention-setting, although there’s no requirement to use it metaphysically.

It’s equally fascinating as a nearly kilogram-sized chunk of volcanic glass.

Born from Volcanic Activity

Part of Black Obsidian’s appeal is the contrast between its appearance and its origin.

A dark, solid piece of volcanic glass began with intensely hot molten material.

Rapid cooling then transformed that material into obsidian without allowing a conventional crystalline structure to develop.

That story has contributed to modern symbolic interpretations of Obsidian around transformation, change and strength — turning something turbulent into something solid.

Those meanings belong to contemporary crystal traditions rather than being geological properties of the material, but they provide an interesting connection between the stone’s natural formation and the symbolism people have attached to it.

Displaying Your Black Obsidian Rough

With approximate dimensions of 17 x 11cm, this specimen is large enough to deserve a deliberate display position.

It can work beautifully alongside Clear Quartz, Selenite or other lighter stones if you enjoy strong visual contrast, or amongst darker minerals for a moodier display.

Because this is a rough piece, choose a stable surface and handle it carefully. Natural Obsidian can have sharp or irregular edges, particularly around fractured areas.

Its weight should also be considered when choosing shelves or display stands.

A Unique Natural Specimen

Large rough pieces are particularly appealing when you enjoy the individuality of natural material.

This isn’t a factory-perfect decorative object.

Its irregularities are precisely what make it interesting.

The contours, fractured surfaces and details belong to this particular piece, giving Black Obsidian Rough Large F its own character within the collection.

That also makes it a good option for collectors who prefer choosing a specific specimen rather than receiving a randomly selected piece of approximately the same size.

Frequently Asked Questions

How large is Black Obsidian Rough Large F?

The specimen measures approximately 17 x 11cm and weighs approximately 980g.

Is Black Obsidian a crystal?

Black Obsidian is commonly grouped with crystals in shops and collections, but geologically it is natural volcanic glass rather than a crystalline mineral.

Is this Black Obsidian polished?

No. This is a rough Black Obsidian specimen, allowing the natural irregular form and texture of the material to remain visible.

What is Black Obsidian traditionally used for?

In modern crystal traditions, Black Obsidian is commonly chosen for intentions involving protection, grounding, strength, reflection, truth and transformation. It is also popular in practices associated with introspection and shadow work.

Will I receive this particular piece?

Yes. This listing identifies the individual specimen as Black Obsidian Rough Large F, with its approximate dimensions and weight supplied for this specific piece.

Does the Black Obsidian come with information about its meaning?

Yes. A crystal meaning card is included, providing more information about Black Obsidian and its traditional associations.

Pairs Well With

• Clear Quartz
• Selenite
• Other rough mineral specimens
• Black and darker crystal displays
• Crystal altars
• Geological collections

Perfect For

• Black Obsidian collectors
• Rough crystal lovers
• Large crystal displays
• Volcanic rock and geology enthusiasts
• Protection and grounding intentions
• Shadow-work spaces
• Altars and meditation areas
• Gothic or dramatic décor
• Anyone who prefers their crystals gloriously unpolished

The Black Obsidian Rough Large F is a wonderfully substantial piece of natural volcanic glass. At approximately 980g and 17 x 11cm, it has the size, raw texture and dramatic black appearance to become a genuine focal point in a crystal or geological collection.

Born from volcanic heat. Left beautifully rough.

 

Black Obsidian cleanses and clears continuously, It blocks psychic attack and absorbs negative energies from the environment. This is a very powerful cleanser and psychic protection stone. They are very beneficial if you are doing work with your spirit guide helping with spiritual communication. Their powerful vibrations aid you to ground yourself and may Shamans have used them when making contact with the spirit world.

 

Common Origins: Mexico, USA, Iceland & Kenya

Other Names: Apache Tear, Black Lava Glass

Zodiac: Aquarius, Capricorn Sagittarius & Scorpio

Planet: Pluto & Saturn

MOHS Hardness: 5

Numerology: 11 & 2

Chakra: Crown, Heart & Root

Elements: Earth & Fire

 

Comes with a meaning card.

 

Check out our full collection of Black Obsidian