Bohemian Garnet Identification Guide
Identify Bohemian garnet, the small deep-red pyrope from the Czech Republic, by its color, hardness, and difference from almandine and glass.
Read the full Bohemian Garnet encyclopedia entry →
What Bohemian Garnet Looks Like
Bohemian garnet is the classic deep blood-red pyrope garnet from the Bohemian region of the Czech Republic. It is prized for its rich, slightly brownish-red to fiery crimson color and high transparency. Rough stones are typically small rounded grains or dodecahedral crystals, rarely more than a centimeter across, with a bright vitreous luster. The color is fairly uniform and does not show the strong color zoning of some other garnets. Faceted Bohemian garnets are usually tiny and cluster-set in antique jewelry.
Step-by-Step Field ID Checklist
- Note the small grain size; true Bohemian pyrope is famously small.
- Confirm a deep, even red color with no banding or sectoring.
- Look for rounded equant grains or rhombic dodecahedral crystal faces.
- Check hardness against quartz and topaz.
- Look for the absence of cleavage and a bright vitreous to subadamantine luster.
Key Diagnostic Tests
- Mohs hardness: ~7–7.5; scratches glass and quartz readily.
- Streak: white.
- Cleavage/fracture: none; conchoidal to uneven fracture.
- Specific gravity: ~3.7–3.8 for pyrope, distinctly heavier than quartz; the stone feels dense for its size.
- Singly refractive: garnet is isotropic, so it shows no doubling of facets under magnification (helps separate from doubly refractive imitations).
- Inclusions: natural pyrope often shows rounded crystal inclusions; glass imitations show gas bubbles.
Common Look-Alikes and How to Tell Them Apart
- Almandine garnet: more purplish-red and even denser (SG up to ~4.3); Bohemian pyrope is a cleaner, slightly browner red and lighter.
- Ruby: much harder (9) and doubly refractive; far more valuable and usually larger.
- Red glass (paste): softer, warm to the touch, with internal gas bubbles and swirl marks; lacks garnet's density.
- Red spinel: also singly refractive but lower SG and different absorption spectrum.
- Rhodolite garnet: a pyrope-almandine blend with a more raspberry/purple tone.
Where Bohemian Garnet Is Found
The stones weather out of pyrope-bearing peridotite and serpentinite in the České středohoří and Podkrkonoší areas of northern Bohemia (Czech Republic), where they are recovered from gravels and soils. Similar pyrope occurs in other peridotite terrains, but the historic Bohemian deposits define the gem.
Frequently asked questions
How can you tell if it's real Bohemian garnet?
Genuine Bohemian garnet is a small, deep even-red pyrope with hardness 7–7.5, no cleavage, an SG near 3.7–3.8, and single refraction; red glass imitations are softer, lighter, and show gas bubbles.
What does Bohemian garnet look like?
It is a small, bright, blood-red to fiery crimson transparent stone, usually under a centimeter, occurring as rounded grains or dodecahedral crystals.
Bohemian garnet vs almandine: what's the difference?
Bohemian garnet is pyrope with a cleaner, slightly brownish-red color and SG around 3.7, while almandine is more purplish-red and noticeably denser.
Why is Bohemian garnet always small?
The pyrope crystals weather out of their host rock as small grains; large clean Bohemian pyropes are genuinely rare, which is why antique pieces use many tiny stones.
Bohemian Garnet identified by the community
Recent Bohemian Garnet specimens identified with Rock Identifier.
