Euclase is a rare, glassy blue to blue-green mineral that looks like aquamarine but breaks far more easily. It is a collector's stone, not an everyday bead.
Silicate (beryllium aluminum silicate)
Euclase
Euclasa
- Palette
- Blue Green Clear White
- Mined in
- Russia, Brazil, Austria, Zimbabwe
- Hardness
- Mohs 7.5 ?
- See-through
- transparent
- Known since
- 1792
- Named for
- Greek for easily and fracture, for its cleavage
- Also sold as
- blue euclase
- Intention
- New Beginnings Love
- Looking for
- Fresh starts Joy Clearing negativity
- Water
- Fine with water and mild soap
- Dye or finish
- Euclase is rare and mostly sold as found, but colorless euclase can be turned blue or green by radiation, so the color is not always natural.
Not in our pieces now
1792
Euclase was first reported in 1792 from Russia's Orenburg district in the southern Urals.
RENÉ JUST HAÜY
The French mineralogist René Just Haüy named euclase for its perfect cleavage, from Greek words meaning easily and fracture.
OURO PRÊTO
Euclase's type locality is Ouro Prêto in Brazil, a gold-rush town that held about 80,000 people by 1750.
What it is
Euclase is a rare, glassy beryllium silicate, best known in pale to deep blue and blue-green, and also colorless, white or yellowish green. It looks like aquamarine but breaks very easily along one flat plane.
What gives it its color
Most euclase gets its blue from traces of iron; some Colombian stones get a greenish blue from chromium. Colorless euclase can be turned blue or green by irradiation.
Where it comes from
Most gem-quality euclase comes from Brazil (Ouro Preto in Minas Gerais), with intense blue crystals from Zimbabwe. It was first found in the Urals of Russia, and it also occurs in Colombia and Austria.
What's said about it
In crystal lore, euclase is the stone people keep for a fresh start. It's said to help them drop old habits, and some call it a happiness stone.
Its name comes from Greek words for easy to break, after the way it splits.
People hold it during quiet visualization or keep it as a display piece.
How people wear or keep it: Held in the hand, on a shelf, or as a protected pendant.
In crystal practice
In the crystal tradition, euclase is paired with the throat and third eye chakras, so practitioners rest it there during meditation or lie down with it in place for a few quiet minutes. Day to day, the same tradition suggests keeping it close: held in the hand, on a shelf, as a protected pendant. People reach for it when they want fresh starts, joy, clearing negativity, and many set an intention when they put it on. Most practitioners cleanse a new stone first (running water only if the stone can take it, otherwise smoke or moonlight) and set it aside now and then to rest.
These are beliefs people have held and still hold about the stone, reported as such. Nothing here is a promise or a medical claim. We sell stones as jewelry, not for these effects.
Associations
The chakra and star sign this stone is usually matched with. These are popular traditions, not facts about the stone.
ChakraThroat, Third Eye
ZodiacSagittarius, Virgo
ElementAir
Also calledblue euclase
Care
- Hard but brittle: one perfect cleavage means a knock can chip or split it.
- Wear it in a protected setting such as a pendant, not a bracelet that meets desks and doorways.
- Clean with lukewarm water and a soft cloth; avoid ultrasonic cleaners and sudden heat.
- Store alone in a padded pouch.
How to tell what you have
- Euclase is hardness 7.5 but splits easily along one direction, so it chips and is fragile.
- Some aquamarine is sold as euclase; the two have different density and optics, so a lab test settles it.
- Blue stones with no visible cleavage lines and a heavier feel may be something else.
What sets the price
Euclase is almost never cut into beads. The few pieces that exist are priced by color (violet is rarest, then strong blue or green), by size, and by whether the color came from irradiation.
Questions people ask at our table
What is euclase?
A rare beryllium aluminum silicate that forms glassy crystals, mostly blue to blue-green. It is a collector's gem, seldom seen as beads.
Is euclase the same as aquamarine?
No, though they look alike when cut. Aquamarine is a beryl; euclase is a different mineral, and it is denser and far more breakable.
Can I wear euclase every day?
It is hard to scratch but chips easily along its cleavage. Collectors favor protected settings and careful wear.
Do you carry euclase?
No, we do not carry it. Blue apatite and amazonite are the blue-green stones in our pieces closest in look.
Not in our pieces right now
Stones we do carry that are close to it are listed under related stones.
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