Morrisonite Jasper
Silicon dioxide (SiO2), variety of chalcedony/microcrystalline quartz
A rare, prized Oregon picture jasper known for blue-green orbs and scenic patterns, often called the king of jaspers.
- Mohs hardness
- 6.5-7
- Color
- Blue, green, brown, cream, and red in orbs and scenic patterns
- Type
- mineral
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Overview
Morrisonite Jasper is a rare and highly prized picture jasper from a single remote deposit in Malheur County, Oregon, USA, near the Owyhee River. It is an opaque microcrystalline quartz (chalcedony) renowned for stunning blue, green, brown, cream, and red orbs, swirls, and scenic landscape patterns.
Often called the "king of jaspers," it is famed for its porcelain-like texture, vivid color combinations, and intricate orbicular designs. The original claim is largely worked out, making fine material scarce and valuable.
Collectors and lapidaries treasure it for both its beauty and its rarity.
Formation & geology
Morrisonite Jasper formed in gas cavities and fractures within volcanic rock of the Owyhee region, where silica-rich solutions slowly precipitated as microcrystalline quartz. Rhythmic deposition and trapped iron, manganese, and other trace minerals produced the orbs, bands, and scenic patterns.
The concentric orbicular structures grew around nucleation points, while varied mineral content created the blues, greens, reds, and creams. Its fine, porcelain-like texture reflects very slow, even crystallization.
It comes from a single, now largely depleted deposit on Morrison Ranch in Malheur County, Oregon, which accounts for its scarcity.
How to identify it
Identify Morrisonite Jasper by its rich blue-green, brown, and cream orbicular and scenic patterns with a smooth, porcelain-like polished surface. It is opaque, hard (6.5-7), scratches glass, resists a steel knife, and shows a white streak; it does not fizz in acid.
Its distinctive blue and green tones, tight orbs, and scenic "picture" quality, combined with Oregon provenance, set it apart from other picture jaspers like Bruneau and Owyhee jaspers. Genuine material is rare, so verify source carefully.
Look-alikes include other Owyhee-area picture jaspers; Morrisonite is distinguished by its particularly fine texture and complex blue-green orbicular color play.
Uses & significance
Morrisonite Jasper is used for premium cabochons, pendants, and collector specimens, valued for its rare scenic and orbicular patterns. Its hardness makes it durable for jewelry, and fine slabs are highly prized display pieces.
Because the deposit is largely worked out, top material commands very high prices and is considered an investment-grade collector jasper.
Metaphysically it is associated with tranquility, vision, and grounding, regarded by enthusiasts as a calming, insightful stone. These are spiritual beliefs, not scientific facts.
Frequently asked questions
Where does Morrisonite Jasper come from?
It comes from a single largely depleted deposit on Morrison Ranch in Malheur County, Oregon, USA, near the Owyhee River.
Why is Morrisonite called the king of jaspers?
Its rich blue-green orbs, scenic patterns, porcelain-like texture, and extreme rarity earned it that reputation among collectors.
Why is Morrisonite Jasper so expensive?
The original deposit is largely worked out, so fine patterned material is scarce and highly sought after, driving high prices.
How is Morrisonite different from Bruneau Jasper?
Both are Owyhee-region picture jaspers, but Morrisonite is known for blue-green orbs and complex color, while Bruneau favors brown-and-cream egg-rock landscapes.
Morrisonite Jasper guides
In-depth guides for identifying, valuing, and understanding Morrisonite Jasper.
