What Rarity is Obsidian and Why You Should Treasure this Volcanic Glass

When I first laid eyes on obsidian as a child on a school field trip, I was mesmerized by its glossy black color and the way it seemed to contain countless tiny stars glistening across its reflective surface. At the time, I had no idea what this fascinating glass-like stone was or where it came from, but the allure and mystery of obsidian stuck with me over the years.

Now as a geology enthusiast, I‘ve had the chance to visit obsidian formations near active volcanoes and research this unique volcanic glass in depth. And I‘m thrilled to share some fascinating insights on obsidian‘s rarity, history, science, and enduring appeal with you here.

So what rarity is obsidian exactly? Obsidian is classified as a mineraloid, meaning it lacks a defined crystalline structure like true minerals, and is considered a common rock-forming material. But truly exceptional quality obsidian, especially rare varieties displaying rainbow iridescence, is extremely scarce and valuable. Let‘s dive into obsidian‘s origins and properties to understand what makes this volcanic glass so special…

What Exactly is Obsidian and How Does it Form?

Obsidian starts out as red-hot molten rock, or magma, deep below the earth‘s surface. It forms from lava that is rich in silica, typically 70% SiO2 or higher. This hot fluid lava gets released through volcanic eruptions of rhyolite or felsite composition.

Now here‘s the key – for obsidian to form, this lava needs to cool incredibly quickly – we‘re talking 1000°C to room temperature in just a matter of minutes! This prevents crystals from growing, freezing the lava structure in place as a solid.

This ultra-fast cooling can happen when lava encounters water, air, or the edges of a lava flow. The result? Obsidian, a volcanic glass with a stunning glossy texture and jet black color. Obsidian lacks any visible crystalline structure and easily fractures into razor-sharp edges – ideal for ancient tools and weapons!

Just How Rare is Obsidian Around the World?

Obsidian can be found in many locations across the globe, normally near rhyolite lava flows, including:

• North and Central America – Yellowstone, Western USA, Mexico, Guatemala
• South America – Chile, Argentina, Peru, Ecuador
• Mediterranean – Greece, Italy, Turkey, Armenia
• Africa – Kenya, Ethiopia, DR Congo
• Australasia – New Zealand, Papua New Guinea

However, obsidian over 20 million years old is extremely scarce worldwide. Over geological timeframes, the glass structure slowly breaks down through a process called "devitrification", forming crystals. Natural processes also gradually weather and erode obsidian formations.

Although obsidian itself forms relatively often in volcanic zones, truly pristine, unweathered obsidian with gem-quality translucency and color play is rare. And extraordinary varieties displaying rainbow banding, metallic sheens, and rich mahogany hues are found in very few locations, making specimens exponentially more valuable.

The Rarest and Most Prized Types of Obsidian on Earth

While ordinary obsidian is abundant, these special varieties are scarcely found in nature:

Fire Obsidian

This displays an incredible rainbow iridescence that dances across its surface, especially at certain angles. Imagine seeing every color of the rainbow flickering over jet black glass! Only about a dozen lava flows worldwide produce fire obsidian, making it extremely scarce.

Rainbow Obsidian

Astonishing rainbow banding rather than just metallic sheens. Highly prized and found in extremely small quantities in Mexico and Greece.

Mahogany Obsidian

Rich reddish-brown obsidian colored by larger magnetite crystal clusters. Very rare outside of a few locations like Mexico and the US.

Gold/Silver Sheen Obsidian

These have glistening golden and silvery sheens. The metallic glow comes from nanoinclusions of elements like gold, silver, and iron. Highly desirable, found in limited areas globally.

The next sections will reveal more about obsidian‘s unique properties and why it has fascinated civilizations through the ages…

What Makes Obsidian so Useful and Valuable?

Obsidian possesses some key qualities that have made it invaluable for tools and ceremonial uses since prehistoric times:

Sharp Fracture Planes

When broken, obsidian fractures into extremely sharp edges – up to 100x sharper than surgical steel! This gave ancient civilizations an ideal material for razor-sharp blades, arrowheads, and tools.

Hardness and Durability

Obsidian has a hardness around 5-6 on the Mohs scale. Softer than crystalline gems like diamonds but still durable for jewelry use. And its amorphous structure allows intricate carving.

Lustrous Surface

When polished, obsidian takes on a beautifully glossy mirror-like shine. Mesoamerican civilizations would polish obsidian for use as sacred mirrors and decorations.

Metaphysical Properties

Obsidian is believed to aid spiritual healing, clarity, and emotional release. This and its natural beauty made it prized for jewelry and ceremonial carvings across many ancient cultures.

Let‘s explore some of the many ways obsidian was used dating back to prehistory…

The Crucial Role of Obsidian Through the Ages

Cutting implements

From razor-sharp Paleolithic hand axe blades to scalpels still used in surgery today, few materials can produce an edge as keen as fractured obsidian.

Weaponry

Obsidian-edged swords, daggers, spears, and clubs were formidable ancient weapons, like the Aztec macuahuitl embedded with obsidian that could decapitate a horse.

Jewelry & ornaments

Obsidian has been crafted into beautiful beads, pendants, and ornamental objects across continents from Ancient Egypt to Mesoamerica to China.

Mirrors

Polished obsidian mirrors with stunning reflective surfaces were used by numerous ancient American cultures for shamanic rituals.

Sculptures & carvings

Thanks to obsidian‘s smooth uniform texture, it has been expertly carved into masks, figurines, and decorative vessels since Neolithic times.

Ceremonial items

Obsidian played a major role in the symbolic and spiritual practices of many pre-Columbian American cultures.

In the modern era, you‘ll still see obsidian jewelry, carved artworks, and home decor objects made by master craftspeople to showcase obsidian‘s timeless splendor. Personally, I think obsidian‘s natural elegance resonates on a deep level – it‘s glass formed through the powerful forces of Gaia herself!

Next let‘s examine obsidian‘s value and pricing…

How Much is Obsidian Worth?

As a common raw material, standard obsidian can sell for just $1-10 per pound. But flawless gem-quality obsidian is far scarcer. Here are typical price ranges:

• Small carved obsidian figurines and décor pieces – $20 to $100

• High-end obsidian jewelry – $100 to $500 per piece

• Rare fire or rainbow obsidian gems – Over $100 per carat

• Museum-quality rare obsidian artifacts – Up to $100,000+

Extraordinary specimens with vibrant rainbow colors or exquisite banding patterns and translucency can be valued at over $5000 per carat based on rarity, aesthetics, provenance, and perceived metaphysical powers.

And remember, obsidian‘s natural cutting edges makes it ideal for carving one-of-a-kind art pieces that showcase its visual depth and mystery. An obsidian mask carved with artistry and spiritual resonance could be truly priceless!

Comparing Obsidian‘s Properties to Other Stones

While obsidian has some limitations in hardness and toughness compared to classic gems, its visual allure and glassy fracture make it shine for special purposes:

Stone/Mineral	Mohs Hardness	Fracture	Luster
Diamond	10	Conchoidal	Adamantine
Ruby/Sapphire	9	Conchoidal	Vitreous
Onyx	7	Conchoidal	Vitreous/Waxy
Obsidian	5-6	Conchoidal	Vitreous
Quartz	7	Conchoidal/Splintery	Vitreous

Obsidian is naturally brittle and prone to chipping compared to tougher crystalline gems. But it can still take a wonderful polish, and has the visual depth and glassy texture unlike any natural stone. For me, the magic is in obsidian‘s mystery!

Should You Add Obsidian to Your Collection?

In recent decades, obsidian has gained renewed popularity both in jewelry and for metaphysical purposes:

• Obsidian is believed to aid emotional healing, clarity, and protection from negativity
• Natural obsidian is linked with energies of purity, vision, and insight
• With proper care, obsidian makes a wonderful jewelry stone
• Rare obsidian types can gain tremendous value over time

Personally, having a piece of obsidian such as a polished pyramid or pendant helps keep me centered and focused. And obsidian‘s glassy charcoal color is so versatile for pairing with other gems in bolder jewelry designs.

So next time you encounter obsidian, consider adding some to your collection! Obsidian‘s allure spans millennia, cultures, and continents, and still feels just as mystical and powerful today.

I hope you‘ve enjoyed learning about obsidian‘s origins, rarity, science, and enthralling history across civilizations. Let me know in the comments if you have any other fun facts about obsidian to share!