Helvine is a beryllium-bearing silicate often found in tetrahedral crystal form within skarns or pegmatites. Collectors should look for its distinct tetrahedral habit and characteristic yellow to reddish-brown coloration, frequently confirmed by its orange-red fluorescence under shortwave UV light.

Hardness

6-6.5

Mohs

Luster

Vitreous

Streak

White

Transparency

Translucent

mineraluncommonHelvine Group family

Helvine

Hardness: 6-6.5
Luster: Vitreous
Streak: White
Transparency: Translucent

Is this helvine?

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 helvine with a known reference. Helvine sits at Mohs 6-6.5, softer than the next harder reference, harder than the previous one.
2
Check the streak
Drag the specimen across an unglazed porcelain plate. Helvine leaves a white streak.
3
Read the luster
Hold the specimen under a strong light. Helvine typically shows a vitreous luster.
4
Match the color range
Compare against the expected color range: yellow, yellowish-brown, reddish-brown, green.
5
Look at form & habit
Crystal system: cubic. Typical habit: tetrahedral crystals, massive, granular.

Often confused with

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

How to tell apart: Helvine is noticeably harder (Mohs 6-6.5 vs. 3.5-4); streak differs, so Helvine leaves white, Sphalerite leaves white to yellow-brown; luster reads vitreous on Helvine and resinous to submetallic on Sphalerite.

Often found alongside helvine

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

All properties

Chemical formula: (Be,Mn,Fe)₄Be₃(SiO₄)₃S
Mohs hardness: 6-6.5
Density: 3.16-3.36 g/cm³
Colors: Yellow Yellowish-brown Reddish-brown Green
Streak: White
Luster: Vitreous
Transparency: Translucent
Crystal system: Cubic
Crystal habit: Tetrahedral Crystals, Massive, Granular
Cleavage: Poor On (111)
Fluorescence: Often Orange-red Under SW UV
Rarity: Uncommon
Uses: Collector, Geological Study
Host rock: Metasomatic Zones, Skarns, Nepheline Syenites, Granite Pegmatites
Typical price: $20-200 thumbnail

Where rockhounds find helvine

Classic worldwide localities

Sweden
Norway
USA
Russia
Canada

Field-hunting tip

Look in metasomatic zones, skarns, nepheline syenites, granite pegmatites country, the host setting where helvine typically forms. If you start seeing garnet, fluorite, magnetite in float, you are in the right ground. Field specimens usually show a tetrahedral crystals, massive, granular habit, so train your eye for that shape before scanning the outcrop.

Common questions

How do you identify helvine?+

Mohs hardness is 6-6.5. It typically shows a vitreous luster. The streak is white. Common colors include yellow, yellowish-brown, reddish-brown, green.

Where is helvine found?+

Notable localities include Sweden; Norway; USA; Russia; Canada.

How much is helvine worth?+

Typical asking prices fall in the range of $20-200 thumbnail. Quality, size, and provenance can move individual specimens well outside that range.

What rocks look like helvine?+

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

What minerals are found with helvine?+

Helvine commonly co-occurs with Garnet, Fluorite, Magnetite, Rhodonite, Calcite. Spotting any of these in float or country rock is a useful trip signal.

What kind of rock does helvine form in?+

Helvine typically forms in metasomatic zones, skarns, nepheline syenites, granite pegmatites. Working float back to the host body is the standard way to chase a fresh occurrence.

What is helvine used for?+

Helvine is used in collector, geological study.

Find helvine on the map

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