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Goshenite
Goshenite is cyclosilicate (beryl variety), Be₃Al₂Si₆O₁₈. In the hand, it rates 7.5 to 8 on the Mohs scale, and it runs water clear and icy white. Beryl with nothing added, water-clear six-sided prisms harder than quartz, the blank canvas of the emerald family. Pegmatites: Goshen, Massachusetts (USA, namesake), Brazil, Pakistan, China.
The geology.
Goshenite carries the formula Be₃Al₂Si₆O₁₈. It belongs to the hexagonal system. Catalogues list it as cyclosilicate (beryl variety).
It sits at 7.5 to 8 on the Mohs scale. The surface reads vitreous. Light behaviour is transparent to translucent. Specific gravity runs 2.66 to 2.87. The streak is white. It breaks with indistinct cleavage; conchoidal fracture.
Beryl with nothing added, water-clear six-sided prisms harder than quartz, the blank canvas of the emerald family.
It reaches buyers as hexagonal prisms, faceted or tumbled.
The origins.
Pegmatites: Goshen, Massachusetts (USA, namesake), Brazil, Pakistan, China.
On value, the database notes: affordable for a precious-family gem.
Traditional associations.
In energy work traditions, associated with truthfulness and unclouded perception.
We keep this section because people ask. It sits below the geology on purpose, and none of it describes something the stone does.
Spotting the real thing.
Beryl with nothing added, water-clear six-sided prisms harder than quartz, the blank canvas of the emerald family.
Colorless synthetics and glass stand in for it in budget jewelry; crystal form and hardness are the checks.
| Looks like | How to tell them apart |
|---|---|
| Clear quartz | Quartz is softer (7 vs 7.5 to 8), with striations across faces; goshenite's striations run lengthwise |
| Clear topaz | Topaz is denser with perfect basal cleavage |
| Glass | Bubbles, warmth, and softness expose it |
At-home tests.
Before anyone talks you into a lab report, these are the checks worth doing yourself on goshenite.
| Test | What you should see |
|---|---|
| Scratch check | Scratches quartz with effort |
| By eye | Hexagonal cross-section |
| By eye | Heavier feel than quartz of equal size |
Destructive tests belong to a gemologist, not a kitchen table. If a piece matters to you, pay for an appraisal before you take a file to it.
Care & handling.
At 7.5 to 8 on the Mohs scale it stands up to everyday wear. It will still chip on a hard knock, so treat edges and points with respect.
It breaks with indistinct cleavage; conchoidal fracture, which is worth knowing before you set it or drop it.
Clean it by hand, dry it properly, and keep it away from ultrasonic cleaners and hot steam.
A deeper look.
Extended detail on composition, sourcing, authentication and market value.
The physical record
The formula on record is Be₃Al₂Si₆O₁₈. Crystal system: Hexagonal. Specific gravity: 2.66 to 2.87. Streak: White. Cleavage and fracture: Indistinct cleavage; conchoidal fracture.
How it reaches the market
Pegmatites: Goshen, Massachusetts (USA, namesake), Brazil, Pakistan, China.
What it gets confused with
Clear quartz: Quartz is softer (7 vs 7.5 to 8), with striations across faces; goshenite's striations run lengthwise. Clear topaz: Topaz is denser with perfect basal cleavage. Glass: Bubbles, warmth, and softness expose it.
What it is worth
Affordable for a precious-family gem.
Where buyers get caught
Colorless synthetics and glass stand in for it in budget jewelry; crystal form and hardness are the checks.
One more thing
Before modern optics, goshenite served as lens and 'spectacle stone', the German word 'Brille' (eyeglasses) traces to beryl.
An education-first guide.
We do not stock goshenite. Writing it up regardless is the point of a reference library.
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