Comparing Onyx And Obsidian: Differences You Should Know

Are you interested in black gemstones valued for their unique black color? Black gemstones are often associated with mystery, power, and sophistication. Black onyx and obsidian are the most popular black gemstones. Both onyx and obsidian share the same black appearance. Join Juyoyo to learn the key differences between onyx and obsidian: physical properties, durability, symbolism, birthstone month, and more. Let's get started!

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• What is Onyx?
• What is Obsidian?
• What is the Difference Between Onyx And Obsidian?
• Conclusion
• Onyx & Obsidian FAQs

What is Onyx?

The English term "onyx" is derived from the Greek word "onux", which means "claw" or "fingernail". Black onyx, known for its smooth and glossy appearance, is a semi-precious black gemstone. It is a type of chalcedony known for its striking parallel banding of different colors, most commonly black. Black onyx has been used in a wide range of jewelry, such as black onyx rings, earrings, necklaces, and so on. It can be found in various countries, including Brazil, India, Madagascar, Mexico, Pakistan, and the United States, among which Brazil, India, and Mexico's black onyx is the most notable.

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What is Obsidian?

Obsidian is a volcanic glass that forms naturally when molten lava cools rapidly. It can occur in shades of brown, green, red, and other colors, but is most commonly black. It is known for its sharp edges and conchoidal fracture pattern, which made it suitable for sharp tools and weapons in ancient times. Obsidian can also be found in various countries, especially those with recent or ongoing volcanic activity. Such places include the United States (Oregon, California, Arizona, Idaho, New Mexico, and Wyoming), Mexico, Iceland, Italy, and Armenia.

What is the Difference Between Onyx And Obsidian?

Although black onyx and obsidian share a similar black color, they differ in other ways. Each gemstone has unique properties, symbolism, and benefits. In this section, you will learn the main difference between these two black obsidian and onyx.

Onyx vs. Obsidian - Physical Properties

Composition

Black Onyx is a type of chalcedony, which is a variety of quartz. It is composed of parallel layers or bands, giving it a visually striking appearance. Obsidian is a volcanic glass formed when lava cools rapidly without crystallizing. It is a natural glass, not a mineral. It is composed primarily of silica and lacks any crystalline structure.

Appearance

Onyx is generally more consistently black, while obsidian can occasionally be found in other colors such as brown, green, or red, but is generally black. Black onyx has a slightly waxy and glossy appearance with parallel banding patterns, typically black and white. Black Obsidian often has a more glassy or vitreous appearance due to its volcanic glass nature.

Hardness

Black onyx has a hardness of 6.5 to 7 on the Mohs scale, while Obsidian has a hardness of about 5 to 5.5 on the Mohs scale. Black onyx is harder than obsidian, making it more durable for everyday use. Black onyx is more suitable for use in jewelry compared to obsidian because obsidian can be sharp and easily broken. Therefore, obsidian is more suitable for tools and weapons.

Density

Onyx has a density ranging from 2.58 to 2.65 g/cm³. Obsidian has a density ranging from 2.3 to 2.5 g/cm³. Black onyx forms through a slower process of silica deposition, making it more compact. As a natural volcanic glass, the formation of obsidian has trapped impurities such as iron and magnesium, which increase its density. As a result, obsidian is denser than black onyx.

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Onyx vs. Obsidian - Durability

Onyx has a hardness of 6.5 to 7 on the Mohs scale and obsidian has a hardness of 5 to 5.5. Onyx is a microcrystalline form of quartz, while obsidian is a volcanic glass. Therefore, onyx is slightly harder and generally more durable than obsidian. However, both black onyx and obsidian are considered tough stones and are durable enough for everyday use in jewelry that is subject to regular use and handling.

Onyx vs. Obsidian - Symbolic Meaning

Black Onyx is often associated with protection, grounding energy, and inner strength. It is believed to protect against harm and unwanted influences by absorbing and transforming negative energies. Onyx is also said to provide support during difficult times, boosting self-confidence and encouraging self-control.

Obsidian is often associated with truth, clarity, power, and transformation. Wearing obsidian can be a shield against negativity, psychic attacks, and environmental pollutants. It is also believed to help reveal hidden truths and promote self-awareness. Obsidian is said to facilitate personal growth and transformation.

Onyx vs. Obsidian - Metaphysical Properties

Black Onyx is considered a stone of protection and inner strength. Wearing a black onyx ring or other jewelry can overcome negative emotions and provide grounding and stability. It can also provide support during difficult times and increase confidence in one's abilities.

Obsidian is considered to be a powerful healing stone. Wearing obsidian jewelry can release emotional blockages, trauma, and negative patterns. It is also used for spiritual protection, creating a shield against psychic attacks, negative entities, and energy vampires.

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Onyx vs. Obsidian - Birthstone Month

Traditional birthstones for December are Turquoise, Zircon, and Tanzanite. Black Onyx is often considered a modern birthstone for December. It is believed to increase strength, courage, and protection for those born in December.

Black Obsidian is associated with Scorpio (October 24 to November 22) and Sagittarius (November 22 to December 21). The common month for these two signs is November. So there's a saying that obsidian is a modern November birthstone. It is believed to bring wisdom and protection to those born in November.

Onyx vs. Obsidian - Value

Both black onyx and obsidian are generally more readily available and affordable than precious gemstones such as diamonds or emeralds. The value of onyx and obsidian can vary depending on several factors such as color intensity, clarity, and size. Obsidian is often considered more affordable than onyx for larger or higher-quality specimens. However, obsidian is more fragile and not well suited for use in jewelry. If you prefer to purchase jewelry, black onyx is more recommended. Black onyx is durable and scratch-resistant for everyday use.

Conclusion

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Onyx & Obsidian FAQs

Can I wear Black Obsidian and Black Onyx together?

Yes, you can wear black obsidian and black onyx together. Both are associated with protection, grounding, healing, or spiritual growth. They are often used in crystal healing, energy work, meditation, and spiritual practices.

What is the Spiritual Significance of Onyx?

The spiritual meaning of onyx is to help overcome negative emotions and provide grounding and stability.

What Does Black Onyx Mean?

Black Onyx symbolizes strength, courage, and protection. It is believed to be a powerful tool that helps to ward off negative energies and influences.

What is the Healing Power of Obsidian?

Obsidian can protect the wearer from negative energies and influences. It is also believed to aid in emotional healing.

Also Read

The Meaning & Symbolism of Black Onyx Engagement Rings

Guide to Know Types of Black Gemstones: Black Precious & Semi-precious Stones