Snowflake Obsidian
Snowflake Obsidian is a black volcanic glass punctuated by white, flower-like patches of cristobalite, a quartz-family mineral that crystallized inside the glass as it weathered. Traditionally associated with shadow work, grounding, and the kind of honesty that doesn't flinch. It reads like a night sky held in stone.
Shop snowflake-obsidianThe geology.
Snowflake Obsidian is a naturally occurring volcanic glass, same formation as regular black obsidian, which happens when silica-rich lava cools too fast to organize into crystals. The white snowflake patches are cristobalite, a polymorph of quartz that formed later as the glass began to devitrify (a slow process where the amorphous structure starts to crystallize). The pattern comes from how those cristobalite crystals nucleated in clusters inside the glass.
Hardness sits at 5 to 5.5 on the Mohs scale. Like all obsidian, it has a conchoidal fracture, meaning it breaks in curved, shell-like patterns that leave razor-sharp edges. This is why obsidian was used for blades and arrowheads across prehistoric cultures. No cleavage, vitreous luster, and it reads glossy when polished.
The origins.
Snowflake Obsidian forms wherever silica-rich lava cools quickly and is later partially devitrified. The United States is the dominant commercial producer, particularly the Mineral Mountains of Utah, the Glass Buttes of Oregon, and various locations in California and Idaho. Mexico (Jalisco and Guerrero), Turkey, and Armenia also produce commercial quantities.
American Snowflake Obsidian, particularly from Utah, is the signature commercial material and makes up most of the small-shop supply. Mexican material tends to have larger, more defined white patches. The snowflake pattern varies piece by piece and is part of the appeal. No two tumbled stones look exactly alike.
Traditional associations.
Obsidian has been worked by humans for at least 700,000 years, making it one of the oldest consciously used stone materials. Its conchoidal fracture and ability to hold an edge sharper than surgical steel made it the premier material for blades, arrowheads, and ceremonial objects across prehistoric cultures worldwide. Pre-Columbian Mesoamerican societies used obsidian in ritual objects, mirrors, and weapons; Greek and Roman writers described obsidian mirrors and amulets.
Many people work with Snowflake Obsidian for shadow work, grounding, and the quiet confrontation of what you've been avoiding. It's most commonly associated with the Root chakra, the elements of Earth and Fire, and the zodiac signs Capricorn and Virgo. The white-in-black pattern is often read as light moving through difficulty, a more patient, integrated approach than pure black obsidian.
Spotting the real thing.
Real Snowflake Obsidian shows a glossy, almost wet-looking black surface with naturally shaped white patches that vary in size and density across the piece. Under a loupe, you can sometimes see the radial crystalline structure of the cristobalite snowflakes. The edges of a broken piece are glass-sharp and curve in conchoidal patterns.
Glass imitations with painted or inlaid white patches are rare but exist at the very bottom of the market. Dead giveaways: patches that are all identical in size and spacing (real cristobalite forms irregular clusters), color painted on the surface, or air bubbles visible under magnification. Reputable sellers name the country of origin.
Care & handling.
Water safe for a brief rinse with warm water and a soft cloth. Skip ultrasonic cleaners, which can propagate microscopic fractures in the glass. Snowflake Obsidian can chip if dropped on hard surfaces because of its conchoidal fracture, handle with the same care you'd give any glass object.
Cleanse energetically with moonlight, sound, smoke, or by placing on selenite overnight. Stable under sunlight. At 5 to 5.5 on the Mohs scale, it's soft enough to scratch with harder stones, so store separately. Watch for sharp edges on raw or broken pieces.
Pairs well with.
Proof, not promises.
We measure our own sourcing across five dimensions. Supply chain, environmental footprint, artisan support, market integrity, and pricing. The number is honest, not perfect. Where we can do better, we say so.
A deeper look.
Extended geology, sourcing, authentication, history, varieties, and pricing, for when the quick guide isn't quite enough.
Extended geology
Snowflake Obsidian is a variety of obsidian, a naturally occurring volcanic glass formed from silica-rich rhyolitic lava that cooled too quickly to organize into a crystalline structure. Composition is roughly 70 to 75 percent silica (SiO₂) with smaller amounts of other oxides. The glass phase is amorphous, meaning it has no long-range atomic order.
The white snowflake patches are cristobalite, a high-temperature polymorph of quartz. As the obsidian glass ages or is exposed to moderate heat, it slowly devitrifies, the amorphous structure begins to crystallize from nucleation sites, producing the radial patches of cristobalite. Mohs hardness 5 to 5.5. Specific gravity 2.35 to 2.60. Luster vitreous. Fracture conchoidal.
Extended sourcing
Utah's Mineral Mountains produce the classic commercial American Snowflake Obsidian, often with well-defined, flower-shaped cristobalite patches. Oregon's Glass Buttes is another major source, producing obsidian with a wider range of including rainbow sheen and mahogany varieties. California, Idaho, and New Mexico also have commercial deposits.
Mexico's Jalisco and Guerrero states produce Snowflake Obsidian with larger and sometimes more dramatic white patches. Turkey's Armenia region, along with Iceland, contribute smaller quantities to the global market. Each source has subtle signature differences in pattern density and base glass quality.
Authentication and warning signs
Real obsidian feels heavy for its size (higher density than most imitations), with a glass-sharp conchoidal fracture at broken edges. The snowflake patches should vary in size, density, and position across the piece, never perfectly uniform. Under magnification you can sometimes see the radial fibrous structure of individual cristobalite crystals within each snowflake.
Synthetic glass imitations are rare but exist. Giveaways include patches that are all identical in size (suggesting mass-produced decorative glass), air bubbles visible inside the material, or surface-painted white spots that can be scratched off. Price is also a signal: Snowflake Obsidian is inexpensive, so suspiciously low prices typically mean the real thing rather than a fake.
Historical and cultural context
Obsidian is one of the oldest continuously worked stone materials. Tools made from obsidian have been found at archaeological sites dating back over 700,000 years. Pre-Columbian Mesoamerican cultures, particularly the Aztecs and Maya, used obsidian for blades, arrowheads, mirrors, and ceremonial objects. The Aztec god Tezcatlipoca is often depicted with an obsidian mirror.
Greek and Roman writers described obsidian mirrors for scrying. The name comes from Obsidius, a Roman traveler said to have brought the first stones back from Ethiopia. In modern metaphysical practice, Snowflake Obsidian is associated with a gentler form of shadow work than black obsidian, the idea being that the white patches offer moments of insight within darker territory.
Varieties and trade names
Snowflake Obsidian: black glass with white cristobalite patches.
Mahogany Obsidian: black with reddish-brown streaks from iron oxide.
Rainbow Obsidian: obsidian showing iridescent sheens from nanoparticle inclusions.
Apache Tears: small rounded obsidian nodules, often translucent.
Sheen Obsidian: gold or silver sheen from aligned gas inclusions.
Pricing reality
Tumbled Snowflake Obsidian: 1 to 5 dollars per piece. Small carved shapes and palm stones: 8 to 25 dollars. Larger polished freeforms and spheres: 25 to 100 dollars depending on pattern density and size. Specimen-grade raw pieces with dramatic snowflake clusters: 30 to 150 dollars.
Value drivers: pattern quality (distinct, well-formed cristobalite patches), balance of black and white, size of the piece, clean polish, and documented origin. Warning signs: painted-looking patches, suspiciously uniform pattern distribution, or pieces with no origin offered.
Good sourcing is a practice, not a claim.
Nothing we sell is synthetic glass or painted imitation sold as natural obsidian. We name our origins where we can. We say so when we cannot. We walk away from material that doesn't meet our standard, even when it costs us sales.
Bring snowflake-obsidian home.
Every piece we carry is photographed individually and listed with its own origin and treatment notes. What you see is what ships.
Shop the snowflake-obsidian collection