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Imperial Jasper is a highly patterned microcrystalline quartz known for its vibrant, soft colors and distinct orbicular or flow-like banding. It is primarily sourced from Mexico and is highly prized by lapidaries for its ability to take a high polish. Collectors should look for intense color saturation and intricate patterns within the stone.

Hardness
6.5-7
Mohs
Luster
Vitreous
Streak
White
Transparency
Opaque

Is this imperial jasper?

5-step field check

Run through these checks against the specimen in your hand. The more boxes tick, the more confident the ID.

  • 1
    Test the hardness
    Try to scratch imperial jasper with a known reference. Imperial Jasper sits at Mohs 6.5-7, softer than the next harder reference, harder than the previous one.
  • 2
    Check the streak
    Drag the specimen across an unglazed porcelain plate. Imperial Jasper leaves a white streak.
  • 3
    Read the luster
    Hold the specimen under a strong light. Imperial Jasper typically shows a vitreous luster.
  • 4
    Match the color range
    Compare against the expected color range: red, green, yellow, purple, brown.
  • 5
    Look at form & habit
    Crystal system: trigonal. Typical habit: massive.

Often confused with

Imperial Jasper vs. its common look-alikes, and how to tell them apart in the field.

Flint Nodules gemstone
mineral
Flint Nodules
Mohs 7

How to tell apart: Luster reads vitreous on Imperial Jasper and waxy on Flint Nodules.

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Agate mineral
mineral
Agate
Mohs 6.5-7

How to tell apart: Luster reads vitreous on Imperial Jasper and waxy on Agate.

Compare →

Often found alongside imperial jasper

Minerals reported to co-occur with imperial jasper. Spotting these in float or country rock is a strong cue you are in the right ground.

All properties

Chemical formula
SiO₂
Mohs hardness
6.5-7
Density
2.6-2.7 g/cm³
Colors
RedGreenYellowPurpleBrown
Streak
White
Luster
Vitreous
Transparency
Opaque
Crystal system
Trigonal
Crystal habit
Massive
Cleavage
None
Rarity
Common
Uses
Lapidary, Collector, Decorative
Host rock
Sedimentary
Typical price
$5-50 for small slabs or cabs, higher for high-quality specimens

Where rockhounds find imperial jasper

Classic worldwide localities

  • Mexico
  • USA
  • Brazil

Field-hunting tip

Look in sedimentary country, the host setting where imperial jasper typically forms. If you start seeing quartz, chalcedony, calcite in float, you are in the right ground. Field specimens usually show a massive habit, so train your eye for that shape before scanning the outcrop.

Common questions

How do you identify imperial jasper?+
Mohs hardness is 6.5-7. It typically shows a vitreous luster. The streak is white. Common colors include red, green, yellow, purple.
Where is imperial jasper found?+
Notable localities include Mexico; USA; Brazil.
How much is imperial jasper worth?+
Typical asking prices fall in the range of $5-50 for small slabs or cabs, higher for high-quality specimens. Quality, size, and provenance can move individual specimens well outside that range.
What rocks look like imperial jasper?+
Imperial Jasper is most often confused with Flint Nodules, Agate. A quick hardness test and a streak check separate the look-alikes faster than color alone.
What minerals are found with imperial jasper?+
Imperial Jasper commonly co-occurs with Quartz, Chalcedony, Calcite. Spotting any of these in float or country rock is a useful trip signal.
What kind of rock does imperial jasper form in?+
Imperial Jasper typically forms in sedimentary. Working float back to the host body is the standard way to chase a fresh occurrence.
What is imperial jasper used for?+
Imperial Jasper is used in lapidary, collector, decorative.

Find imperial jasper on the map

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