Ciprianiite is an extremely rare silicate mineral found in the volcanic ejecta of Italy. It typically forms as small, elongated prismatic crystals in cavities and is highly sought after by systematic mineral collectors due to its localized occurrence.

Hardness

5-6

Mohs

Luster

Vitreous

Streak

White

Transparency

Translucent

mineralrareHellandite Group family

Ciprianiite

Hardness: 5-6
Luster: Vitreous
Streak: White
Transparency: Translucent

Is this ciprianiite?

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 ciprianiite with a known reference. Ciprianiite sits at Mohs 5-6 — softer than the next harder reference, harder than the previous one.
2
Check the streak
Drag the specimen across an unglazed porcelain plate. Ciprianiite leaves a white streak.
3
Read the luster
Hold the specimen under a strong light. Ciprianiite typically shows a vitreous luster.
4
Match the color range
Compare against the expected color range: pink, brown, yellowish-brown.
5
Look at form & habit
Crystal system: monoclinic. Typical habit: prismatic crystals.

Often confused with

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

Often found alongside ciprianiite

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

All properties

Chemical formula: (Ca,REE)₄(Be,B)₂(Si,B)₄O₂₂(OH,F)₂
Mohs hardness: 5-6
Density: 3.75-3.85 g/cm³
Colors: Pink Brown Yellowish-brown
Streak: White
Luster: Vitreous
Transparency: Translucent
Crystal system: Monoclinic
Crystal habit: Prismatic Crystals
Cleavage: None
Rarity: Rare
Uses: Collector
Host rock: Ejecta of Volcanic Origin
Typical price: $50-300 per specimen

Where rockhounds find ciprianiite

Classic worldwide localities

Vico volcano, Lazio, Italy

Field-hunting tip

Look in ejecta of volcanic origin country — that is the host setting where ciprianiite typically forms. If you start seeing sanidine, augite, phlogopite in float, you are in the right ground. Field specimens usually show a prismatic crystals habit, so train your eye for that shape before scanning the outcrop.

Common questions

How do you identify ciprianiite?+

Mohs hardness is 5-6. It typically shows a vitreous luster. The streak is white. Common colors include pink, brown, yellowish-brown.

Where is ciprianiite found?+

Notable localities include Vico volcano, Lazio, Italy.

How much is ciprianiite worth?+

Typical asking prices fall in the range of $50-300 per specimen. Quality, size, and provenance can move individual specimens well outside that range.

What rocks look like ciprianiite?+

Ciprianiite is most often confused with Gadolinite-(Y). A quick hardness test and a streak check separate the look-alikes faster than color alone.

What minerals are found with ciprianiite?+

Ciprianiite commonly co-occurs with Sanidine, Augite, Phlogopite. Spotting any of these in float or country rock is a useful trip signal.

What kind of rock does ciprianiite form in?+

Ciprianiite typically forms in ejecta of volcanic origin. Working float back to the host body is the standard way to chase a fresh occurrence.

What is ciprianiite used for?+

Ciprianiite is used in collector.

Find ciprianiite on the map

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