Lab-Grown Quartz
Lab-Grown Quartz is synthetic mineral (hydrothermal), SiO₂. In the hand, it rates 7 on the Mohs scale, and it runs water clear and vivid blue. Genuine quartz grown in autoclaves, flawless, often in impossible saturated colors (cobalt blue), sometimes showing a flat seed plate at the core. Grown industrially (USA, Russia, China) for electronics; gem-grade offcuts enter the crystal market.
The geology.
Lab-Grown Quartz carries the formula SiO₂. It belongs to the trigonal system. Catalogues list it as synthetic mineral (hydrothermal).
It sits at 7 on the Mohs scale. The surface reads vitreous. Light behaviour is transparent. Specific gravity runs 2.65. The streak is white. It breaks with conchoidal fracture.
Genuine quartz grown in autoclaves, flawless, often in impossible saturated colors (cobalt blue), sometimes showing a flat seed plate at the core.
It reaches buyers as flat-grown crystal slabs, faceted, beads or 'siberian blue' gems.
The origins.
Grown industrially (USA, Russia, China) for electronics; gem-grade offcuts enter the crystal market.
On value, the database notes: affordable; honest when labeled.
Traditional associations.
In energy work traditions, debated, it is chemically real quartz, but with weeks of factory history rather than geological time.
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.
Genuine quartz grown in autoclaves, flawless, often in impossible saturated colors (cobalt blue), sometimes showing a flat seed plate at the core.
Vivid blue/green 'quartz' gems and ultra-clean amethyst points are routinely lab-grown and sold as natural.
| Looks like | How to tell them apart |
|---|---|
| Natural quartz | Natural crystals carry veils, wisps, and zoning; lab crystals are eerily clean with tabular seed geometry |
| Smelted glass | Glass has bubbles and no crystal structure; lab quartz is true crystal, no bubbles |
| Dyed quartz | Dye sits in cracks; lab color is even throughout |
At-home tests.
Before anyone talks you into a lab report, these are the checks worth doing yourself on lab-grown quartz.
| Test | What you should see |
|---|---|
| By eye | Flawless interior + saturated unnatural color = lab |
| By eye | Look for flat seed-plate plane in crystal centers |
| Still real quartz | scratches glass, no bubbles |
Anything that scratches, burns or dissolves the piece is a lab job. Get it appraised rather than testing it apart.
Care & handling.
At 7 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 conchoidal fracture, which is worth knowing before you set it or drop it.
Warm water and a soft cloth clean almost everything. Ultrasonic tanks, steamers and household cleaners are where pieces get ruined.
A deeper look.
Extended detail on composition, sourcing, authentication and market value.
The physical record
The formula on record is SiO₂. Crystal system: Trigonal. Specific gravity: 2.65. Streak: White. Cleavage and fracture: Conchoidal fracture.
How it reaches the market
Grown industrially (USA, Russia, China) for electronics; gem-grade offcuts enter the crystal market.
What it gets confused with
Natural quartz: Natural crystals carry veils, wisps, and zoning; lab crystals are eerily clean with tabular seed geometry. Smelted glass: Glass has bubbles and no crystal structure; lab quartz is true crystal, no bubbles. Dyed quartz: Dye sits in cracks; lab color is even throughout.
What it is worth
Affordable; honest when labeled.
Where buyers get caught
Vivid blue/green 'quartz' gems and ultra-clean amethyst points are routinely lab-grown and sold as natural.
One more thing
Industry grows hundreds of tonnes of flawless quartz yearly for oscillators, your watch crystal and a 'siberian blue quartz' gem are siblings.
An education-first guide.
No product links here. We do not sell lab-grown quartz, and a guide that only covers our own shelves would not be much of a guide.
Explore the Crystal Guide