Garnet refers to a large group of nesosilicate minerals that share a common crystal structure and general chemical formula. They are most easily identified by their characteristic dodecahedral or trapezohedral crystal forms and occur in a wide variety of metamorphic and igneous environments worldwide.

Hardness

6.5-7.5

Mohs

Luster

Vitreous

Streak

White

Transparency

Transparent

mineralcommon

Garnet

Hardness: 6.5-7.5
Luster: Vitreous
Streak: White
Transparency: Transparent

Spotting garnet in the field

Field marks

1
Well-formed 12 or 24-sided ball-like crystals, often nearly spherical
2
No cleavage, so broken pieces have curved conchoidal surfaces
3
Hard at 6.5 to 7.5 and noticeably heavy for its size

Garnet is a group rather than one mineral, and the crystal shape is the family signature: those rounded many-faced balls are unmistakable once you have seen a few. It is a metamorphic mineral above all, so schist, gneiss and skarn are the ground to work, along with the stream gravels below them where garnet concentrates because it is hard and heavy. Weathered schist gives them up freely, and a screen in the creek below an outcrop is often more productive than hammering the rock.

Straight answers

Is it worth cutting?: Cuts and facets well, and the harder species take a fine polish. Its hardness and lack of cleavage make it a forgiving stone to learn faceting on.
What is it really worth?: Common almandine is cheap. Demantoid, tsavorite and fine spessartine are genuinely valuable.
Can you legally keep it?: Widely collectible on public land under ordinary personal-use rules. Some famous localities are commercial operations.

Often confused with

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

mineral

Spinel

Mohs 8

How to tell apart: Spinel forms octahedra, eight triangular faces, rather than the rounded 12 and 24-sided garnet forms.

How to tell apart: Corundum is harder at 9 and forms barrel-shaped hexagonal crystals. Garnet is softer and rounder.

Compare →

Often found alongside garnet

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

All properties

Chemical formula: X₃Y₂(SiO₄)₃
Mohs hardness: 6.5-7.5
Density: 3.5-4.3 g/cm³
Colors: Red Green Yellow Brown Black Pink Orange
Streak: White
Luster: Vitreous
Transparency: Transparent
Crystal system: Cubic
Crystal habit: Dodecahedral and Trapezohedral Crystals, Massive
Cleavage: None
Rarity: Common
Uses: Gemstone, Abrasive, Collector
Host rock: Metamorphic Rocks Like Schist and Gneiss, Sometimes Igneous Rocks
Typical price: $5-50 thumbnail, $100-5000+ cabinet specimen

Where rockhounds find garnet

197 mapped spots

Classic worldwide localities

USA
India
Madagascar
Tanzania
Brazil
Czech Republic

U.S. states with garnet

Each link opens a state-specific list of mapped rockhounding spots that produce garnet.

Field-hunting tip

Look in metamorphic rocks like schist and gneiss, sometimes igneous rocks country, the host setting where garnet typically forms. If you start seeing quartz, mica, feldspar in float, you are in the right ground. Field specimens usually show a dodecahedral and trapezohedral crystals, massive habit, so train your eye for that shape before scanning the outcrop. In the U.S., the densest reported localities are in North Carolina, Utah, Georgia. Start trip planning there.

Browse 197 U.S. spots for garnet →

Common questions

How do you identify garnet?+

Mohs hardness is 6.5-7.5. It typically shows a vitreous luster. The streak is white. Common colors include red, green, yellow, brown.

Where is garnet found?+

Notable localities include USA; India; Madagascar; Tanzania; Brazil.

Can I find garnet in the United States?+

RockHoundR maps 197 garnet rockhounding spots across 12 U.S. states. The top states are North Carolina, Utah, Georgia.

How much is garnet worth?+

Typical asking prices fall in the range of $5-50 thumbnail, $100-5000+ cabinet specimen. Quality, size, and provenance can move individual specimens well outside that range.

What rocks look like garnet?+

Garnet is most often confused with Spinel, Ruby. A quick hardness test and a streak check separate the look-alikes faster than color alone.

What minerals are found with garnet?+

Garnet commonly co-occurs with Quartz, Mica, Feldspar, Chlorite. Spotting any of these in float or country rock is a useful trip signal.

What kind of rock does garnet form in?+

Garnet typically forms in metamorphic rocks like schist and gneiss, sometimes igneous rocks. Working float back to the host body is the standard way to chase a fresh occurrence.

What is garnet used for?+

Garnet is used in gemstone, abrasive, collector.

Find garnet on the map

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