Polished Black Agate Crystal Thick Geode Slices with sparkling druzy centers for grounding and protection.
Polished Black Agate Crystal Thick Geode Slices with raw edges for grounding and protection.
Polished Black Agate Crystal Thick Geode Slice with sparkling quartz center for grounding and protection.
Polished Black Agate Crystal Thick Geode Slices with raw edges for grounding and protection.
Polished Black Agate Crystal Thick Geode Slice with a protective, grounding raw crystal center.
Polished Black Agate Crystal Geode Slices with raw edges and sparkling crystal inclusions for grounding.
Polished Black Agate Crystal Geode Slice with sparkling inclusions for grounding and protection.

Black Agate Crystal Thick Polished Geode Slice

Regular price$44.99
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🚚 Shipping $5.00 • Free over $100.00

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Size chart

Use this reference guide to convert between centimeters, millimeters, and inches when shopping for crystals. All Crystal Destiny product listings show measurements in millimeters (mm).

CM to MM to Inches Conversion Chart

Centimeters (cm) Millimeters (mm) Inches (in)
0.5 cm 5 mm 0.2 in
1 cm 10 mm 0.39 in
1.5 cm 15 mm 0.59 in
2 cm 20 mm 0.79 in
2.5 cm 25 mm 0.98 in
3 cm 30 mm 1.18 in
3.5 cm 35 mm 1.38 in
4 cm 40 mm 1.57 in
4.5 cm 45 mm 1.77 in
5 cm 50 mm 1.97 in
5.5 cm 55 mm 2.17 in
6 cm 60 mm 2.36 in
6.5 cm 65 mm 2.56 in
7 cm 70 mm 2.76 in
7.5 cm 75 mm 2.95 in
8 cm 80 mm 3.15 in
8.5 cm 85 mm 3.35 in
9 cm 90 mm 3.54 in
9.5 cm 95 mm 3.74 in
10 cm 100 mm 3.94 in
11 cm 110 mm 4.33 in
12 cm 120 mm 4.72 in
13 cm 130 mm 5.12 in
14 cm 140 mm 5.51 in
15 cm 150 mm 5.91 in
16 cm 160 mm 6.30 in
17 cm 170 mm 6.69 in
18 cm 180 mm 7.09 in
19 cm 190 mm 7.48 in
20 cm 200 mm 7.87 in
25 cm 250 mm 9.84 in
30 cm 300 mm 11.81 in

Quick Reference

  • 1 cm = 10 mm = 0.394 inches
  • 1 inch = 25.4 mm = 2.54 cm
  • 1 mm = 0.1 cm = 0.039 inches

All Crystal Destiny product measurements are listed in millimeters (mm). Use this chart to convert to your preferred unit of measurement.

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Black agate has a quiet authority to it. These geode slices show that quality beautifully: the deep, glossy black surface with natural crystal inclusions catching the light, the raw edge where the stone was cut revealing the geode's interior structure. They're striking as display pieces and genuinely grounding as working crystals. The kind of thing that earns a permanent spot on an altar or desk simply by being what it is.

Product Highlights

  • Stone: Black Agate, a protective variety of Agate
  • Form: Polished geode slice with natural crystal inclusions and raw edges
  • Color: Deep glossy black with natural crystal pockets and inclusions; varies per piece
  • Chakra: Root Chakra
  • Intentions: Protection, Grounding and Stability, Healing
  • Finish: Polished face with natural raw edges
  • This product is pulled at random by size.
  • Display on a shelf or altar, use as a protective anchor in a room, or work with in meditation and grounding practice.

Chakra Connection

Black agate is one of the most grounding stones you can work with, and it connects most naturally with the Root Chakra, the energy center at the base of the spine that governs our sense of safety, stability, and physical presence. The deep black color absorbs and transmutes negative energy, creating a protective field around the space or person it's working with. In geode slice form, the stone's energy radiates outward from the polished face, making it particularly effective as a room anchor or altar centerpiece. The natural crystal inclusions within the slice add an additional layer of energetic complexity, as the tiny crystal formations amplify and refract the stone's protective energy.

How to Use

  • Display on an altar, shelf, or desk as a protective anchor that continuously radiates grounding and protective energy into the space.
  • Place near the entrance of a room or home as a guardian stone, absorbing and transmuting negative energy before it enters your space.
  • Hold during meditation and focus on the breath to let the stone's deep, grounding energy anchor you into the present moment.
  • Pair with Black Tourmaline for layered protection and energetic shielding, or with Obsidian for amplified transmutation of negative energy.
  • Use in a crystal grid alongside Clear Quartz to amplify and direct black agate's protective energy throughout a room.

Crystal Care

Agate is a durable stone, typically sitting at 6.5 to 7 on the Mohs scale, and black agate handles most cleansing methods well. A brief rinse under cool running water is fine. For energetic cleansing, smoke cleansing with sage or palo santo works beautifully, as does placing it near a piece of Selenite overnight. Moonlight is another gentle and effective option. Avoid prolonged soaking, and handle the raw edges with some care as they can be sharp. A soft cloth is all you need to keep the polished face looking its best.

Frequently Asked Questions

Is this genuine black agate?
Yes. These are natural black agate geode slices. Some black agate on the market is dyed, but the deep black color in natural black agate comes from carbon or manganese inclusions within the stone. Each slice is a genuine natural specimen with its own unique pattern of inclusions and crystal formations.

What are the crystal inclusions inside the slice?
The inclusions you see within the slice are natural crystal formations that developed inside the geode cavity over time. These are typically quartz or chalcedony crystals that grew within the agate as mineral-rich water moved through the stone during formation. They're entirely natural and add to both the visual interest and the energetic complexity of each piece.

What is black agate good for?
Black agate is most often worked with for protection, grounding, and energetic shielding. It's a stone that absorbs and transmutes negative energy, making it particularly useful in spaces that feel heavy or in situations where you want a strong protective presence. It's also a solid grounding stone for root chakra work.

What crystals pair well with black agate?
For layered protection, Black Tourmaline is a natural companion. For amplified transmutation of negative energy, Obsidian pairs powerfully. If you want to amplify and direct the stone's protective energy, Clear Quartz is always a reliable choice.

Can I put this stone in water?
Yes, briefly. Agate is generally water-safe for rinsing. We recommend against prolonged soaking, and always pat dry after any water contact. Take care with the raw edges when handling.

What Is Black Agate?

Black agate is a variety of chalcedony, the same mineral family as all agates, characterized by its deep black color caused by carbon or manganese inclusions within the stone. It's found in several locations worldwide and has been used as a protective and grounding stone across many cultures for thousands of years. In ancient times it was carried as a talisman against negative energy and worn as protective jewelry. Today it's valued in the crystal world for its strong protective and grounding qualities, and in geode slice form it makes a particularly striking display piece that works as both a natural art object and a functional energetic tool.

Learn More

If black agate's protective, grounding energy resonates with you, explore our full Agate collection to see the full range of agate varieties we carry. Our Protection Crystals and Grounding and Stability collections are also worth browsing for more stones that carry a similar protective quality.

  • 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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