Eclogite is a high-grade metamorphic rock primarily composed of red pyrope-almandine garnet and green sodic pyroxene known as omphacite. It forms under high-pressure, moderate-temperature conditions, typically indicating subduction zone processes deep within the Earth's crust. Collectors prize it for the striking contrast between its vibrant green and red components.

metamorphiccommon

Eclogite

Is this eclogite?

2-step field check

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

1
Match the color range
Compare against the expected color range: green, red.
2
Look at form & habit
Typical habit: massive.

Often found alongside eclogite

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

All properties

Density: 3.3-3.6 g/cm³
Colors: Green Red
Crystal habit: Massive
Rarity: Common
Uses: Collector, Scientific Research
Host rock: Metamorphic Belts
Typical price: $10-50 per specimen

Where rockhounds find eclogite

Classic worldwide localities

Norway
Austria
California, USA
China
Russia

Field-hunting tip

Look in metamorphic belts country — that is the host setting where eclogite typically forms. If you start seeing garnet, omphacite, kyanite 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

Where is eclogite found?+

Notable localities include Norway; Austria; California, USA; China; Russia.

How much is eclogite worth?+

Typical asking prices fall in the range of $10-50 per specimen. Quality, size, and provenance can move individual specimens well outside that range.

What minerals are found with eclogite?+

Eclogite commonly co-occurs with garnet, omphacite, kyanite, rutile, glaucophane. Spotting any of these in float or country rock is a useful trip signal.

What kind of rock does eclogite form in?+

Eclogite typically forms in metamorphic belts. Working float back to the host body is the standard way to chase a fresh occurrence.

What is eclogite used for?+

Eclogite is used in collector, scientific research.

Find eclogite on the map

RockHoundR shows mapped rockhounding spots, access rules, and lets you log every find.