Garnet Schist is a metamorphic rock characterized by its distinct foliation and embedded porphyroblasts of garnet. Collectors prize specimens that display large, well-formed garnet crystals sitting prominently within a glittering, micaceous matrix.
Is this garnet schist?
5-step field checkRun through these checks against the specimen in your hand. The more boxes tick, the more confident the ID.
- 1Test the hardnessTry to scratch garnet schist with a known reference. Garnet Schist sits at Mohs 3-7, softer than the next harder reference, harder than the previous one.
- 2Check the streakDrag the specimen across an unglazed porcelain plate. Garnet Schist leaves a white streak.
- 3Read the lusterHold the specimen under a strong light. Garnet Schist typically shows a pearly luster.
- 4Match the color rangeCompare against the expected color range: gray, brown, silver, dark red.
- 5Look at form & habitTypical habit: foliated.
Often found alongside garnet schist
Minerals reported to co-occur with garnet schist. Spotting these in float or country rock is a strong cue you are in the right ground.
All properties
- Mohs hardness
- 3-7
- Density
- 2.7-3.2 g/cm³
- Streak
- White
- Luster
- Pearly
- Transparency
- Opaque
- Crystal habit
- Foliated
- Cleavage
- Perfect Schistose Cleavage
- Rarity
- Common
- Uses
- Collector, Educational
- Host rock
- Regional Metamorphic Belts
- Typical price
- $5-30 per hand specimen
Where rockhounds find garnet schist
1 mapped spotsClassic worldwide localities
- Vermont, USA
- Scotland
- Norway
- Austria
- Switzerland
Field-hunting tip
Look in regional metamorphic belts country, the host setting where garnet schist typically forms. If you start seeing almandine, muscovite, biotite in float, you are in the right ground. Field specimens usually show a foliated habit, so train your eye for that shape before scanning the outcrop. In the U.S., the densest reported localities are in Michigan. Start trip planning there.





