Polished Aura Black Obsidian cubes with a vibrant, iridescent rainbow sheen for healing and modern decor.
Aura Black Obsidian Cube with a vibrant, iridescent rainbow sheen for healing energy and modern decor.
Polished Aura Black Obsidian Cube with vibrant, iridescent purple and blue metallic sheen.
Iridescent Aura Black Obsidian Cubes with a glossy, rainbow-colored metallic finish for healing and modern decor.
Iridescent Aura Black Obsidian polished geometric cubes with a glossy, rainbow-colored metallic sheen.
Polished Aura Black Obsidian Cube with a vibrant, iridescent rainbow sheen for healing and modern decor.

Aura Black Obsidian Crystal Polished Geometric Cube

Regular price$24.99
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🚚 Shipping $5.00 • Free over $100.00

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Size chart

Not sure which crystal cube size is right for you? Use this guide as a general reference. Weight estimates are approximate and vary based on the density of each crystal type.

Crystal cube size comparison chart showing six sizes from Mini 13-19mm to Jumbo 64-76mm in different crystal materials

Crystal Cube Size Chart

All weights are estimates based on average crystal density. Actual weight may vary by stone type.

Size Dimensions (in) Dimensions (mm) Approx. Weight
Mini 0.5" – 0.75" 13–19 mm 5–10 g
Small 0.75" – 1" 19–25 mm 15–25 g
Medium 1" – 1.5" 25–38 mm 35–60 g
Large 1.5" – 2" 38–50 mm 80–150 g
Extra Large 2" – 2.5" 50–64 mm 180–280 g
Jumbo 2.5" – 3" 64–76 mm 320–450 g
Premium 3" – 3.5" 76–89 mm 500–700 g
Deluxe 3.5" – 4" 89–102 mm 750–1,000 g
Collector's 4"+ 102 mm+ 1,000 g+

Choosing the Right Size

  • Mini – Small (13–25 mm): Perfect for pockets, pouches, travel, and small altar arrangements.
  • Medium – Large (25–50 mm): The most popular range. Great for desks, shelves, and crystal grids.
  • Extra Large – Jumbo (50–76 mm): Eye-catching display pieces. Ideal for living rooms and healing spaces.
  • Premium – Collector's (76 mm+): Statement and collector pieces. Significant weight — plan your display accordingly.

All measurements are approximate. Natural crystals vary in weight based on stone density and formation. Each cube is unique.

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There's something quietly magnetic about a perfectly polished cube sitting on your shelf, catching the light and throwing it back in a wash of violet, gold, and green. Aura Black Obsidian takes that moment and turns it into something you feel as much as see. The deep volcanic black of natural obsidian is bonded with precious metals through a high-heat vapor process, creating that signature iridescent shimmer that shifts with every angle. It's bold, it's grounding, and it's genuinely beautiful.

Product Highlights

  • Stone: Aura Black Obsidian (natural obsidian with metallic vapor bonding)
  • Shape: Polished geometric cube with smooth, even edges
  • Available sizes: 30mm and 40mm cubes
  • Primary chakra: Root
  • Secondary chakra: Third Eye
  • Intentions: Protection, Grounding & Stability
  • This product is pulled at random by size.
  • Beautiful on a desk, altar, shelf, or meditation space

Chakra Connection

Obsidian has always been a Root Chakra stone at its core, anchoring scattered energy and pulling you back into your body when life gets overwhelming. The aura treatment adds a layer of ethereal shimmer that resonates with the Third Eye, inviting clarity and intuitive awareness alongside that deep grounding. The cube shape amplifies this beautifully. Cubes are symbols of stability and structure in sacred geometry, their six equal faces representing balance in all directions. Holding or placing a cube encourages a sense of order and calm, making this piece as energetically intentional as it is visually striking.

How to Use

  • Place on your desk or workspace to absorb scattered, anxious energy and keep you focused and grounded throughout the day.
  • Set on your altar or meditation space alongside Selenite to combine deep grounding with high-frequency cleansing energy.
  • Hold in your non-dominant hand during meditation to draw in protective, stabilizing energy while quieting mental chatter.
  • Pair with Black Tourmaline near your front door or windows for a powerful energetic boundary around your home.
  • Use alongside Smoky Quartz to transmute heavy or stagnant energy in a room, especially after conflict or stress.
  • Keep on your nightstand to encourage restful sleep and ward off intrusive thoughts or nightmares.

Crystal Care

Aura Black Obsidian is a relatively durable stone, but the metallic vapor bonding on the surface deserves a little care. Avoid harsh chemicals, ultrasonic cleaners, or prolonged soaking in water, as these can dull or damage the iridescent coating over time. For physical cleaning, a soft dry cloth or a very brief rinse with plain water works perfectly. For energetic cleansing, this stone responds beautifully to sound, whether that's a singing bowl, tuning fork, or even a few minutes of intentional breathwork near the stone. You can also place it on a piece of Selenite overnight to clear and recharge its energy without any risk to the surface. Moonlight is another wonderful option, especially during a full moon, and it's completely safe for the coating. Avoid direct sunlight for extended periods, as UV exposure can gradually affect the metallic sheen.

Frequently Asked Questions

Is this real obsidian?
Yes. Aura Black Obsidian starts as natural volcanic obsidian, which is then treated through a process called vapor deposition, where precious metals like titanium, gold, or platinum are bonded to the surface at high temperatures. The base stone is 100% natural; the iridescent shimmer is the result of that metallic bonding process.

How do I know the size I'm getting?
This product comes in two sizes: 30mm and 40mm cubes. You select your preferred size at checkout. Each piece is pulled at random from our inventory of that size, so the exact specimen will vary, but the size you choose is what you'll receive.

What crystals pair well with Aura Black Obsidian?
It works beautifully with Clear Quartz to amplify its protective energy, with Black Tourmaline for layered energetic shielding, and with Selenite to balance its deep, absorbing energy with light and clarity.

Can I use this for meditation?
Absolutely. The cube shape makes it easy to hold or place in front of you during seated meditation. Its grounding energy is particularly helpful if you tend toward an overactive mind or find it hard to stay present. Many people find that simply holding it for a few minutes before meditating helps settle the nervous system.

How do I verify it's authentic?
Genuine aura-treated obsidian has a consistent, deep black base with an iridescent shimmer that shifts color depending on the angle of light. It should feel cool and glassy to the touch, with a smooth, polished surface. If the color looks painted on or doesn't shift with the light, that's a red flag. All Crystal Destiny pieces are sourced and inspected for quality before they reach you.

What Is Aura Black Obsidian?

Obsidian is volcanic glass, formed when lava cools so rapidly that crystals don't have time to grow. It's been used by humans for tens of thousands of years, first as a cutting tool and later as a mirror, a protective talisman, and a spiritual ally. Black obsidian in particular has long been associated with truth-telling and shadow work, the kind of deep inner honesty that isn't always comfortable but is almost always necessary. Aura obsidian takes that ancient stone and gives it a modern transformation: precious metals are bonded to the surface through a high-heat vapor process, creating the rainbow shimmer you see. It's not a coating that chips or peels; it's a molecular bond. The result is a stone that carries all the grounding, protective qualities of natural obsidian while adding a layer of energetic uplift and visual magic that's hard to look away from. Learn more in our guides: Obsidian Crystal Guide and Aura Crystals: The Science Behind the Shimmer.

Further Reading

If you're drawn to the energy of obsidian, you might also love exploring our protection crystals, our grounding and stability collection, or our full range of polished crystals. Each piece is chosen with care, and this cube is one of those that tends to find the right person.

  • Free shipping on orders over $100.00 within the United States.
  • We strive to process and ship orders within 1-2 business days
  • Estimated delivery time is typically 12-16 days, though it may vary based on the destination

We appreciate your patience and understanding as we work diligently to deliver your order promptly and securely. For any further assistance or inquiries regarding shipping, please feel free to reach out our customer support team.

Each crystal is natural and unique, with no two crystals being identical. Some crystal may contain naturally formed cracks within itself, not caused by other objects.

Please note that size, color, and patterns may vary due to the different batches of crystals and its natural inclusions, or hand measurements.

You can always reference the Size Chart on every product page to translate grams to pounds and ounces, and, millimeters and centimeters to inches.

Thank you for understanding and enjoying all the wonders of crystals.

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