Pigeon Blood Agate Identification Guide
How to identify pigeon blood agate by its deep red and grey-white chalcedony banding, waxy luster, and conchoidal fracture.
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What Pigeon Blood Agate Looks Like
Pigeon blood agate is a banded chalcedony (microcrystalline quartz) named for its rich blood-red to brownish-red coloration, typically mixed with grey, white, or cream layers.
- Color: Deep red to crimson and brick-red, often swirled or banded with grey-white and translucent zones.
- Luster: Waxy to vitreous when polished.
- Transparency: Translucent on thin edges to opaque.
- Habit: Massive nodules and seam fillings; banding may be wavy, mottled, or fortification-style.
Step-by-Step Field ID Checklist
- Check translucency at the edge. Hold a thin edge to light — true agate glows translucent where the red is thin.
- Look for banding or swirling. Concentric or wavy red-and-grey patterning is typical.
- Feel the surface. Polished agate has a smooth, waxy feel.
- Test hardness. It scratches glass and steel.
- Inspect for botryoidal or nodule form in rough specimens.
Key Diagnostic Tests
- Mohs hardness: ~6.5–7. Will scratch glass; a steel knife will not scratch it.
- Streak: White.
- Fracture: Conchoidal, with sharp edges; no cleavage.
- Density: ~2.6 g/cm³.
- Acid: No fizz (it is silica, distinguishing it from red carbonates).
Common Look-Alikes and How to Tell Them Apart
- Red jasper: Jasper is fully opaque and dull-grainy on a fresh break; pigeon blood agate shows translucency and banding.
- Carnelian: Carnelian is more uniformly orange-red and translucent without strong grey-white banding.
- Dyed agate: Artificially dyed reds are often unnaturally even and intense; look for dye concentrated in cracks and an absence of natural banding gradients.
- Rhodochrosite or red calcite: These are much softer (3–4) and fizz/scratch easily, unlike hard, acid-inert agate.
- Bloodstone: Bloodstone is green with red spots, not banded red-grey.
Where Pigeon Blood Agate Is Found
Material marketed as pigeon blood agate comes from several agate-producing regions, including the western United States and, notably, parts of China and Mongolia. The name is a trade/color descriptor rather than a strict locality term, so confirm identity by physical properties rather than label.
Frequently asked questions
How can you tell if pigeon blood agate is real?
Look for translucency on thin edges, natural red-and-grey banding, a waxy luster, and a hardness of 6.5–7 that scratches glass without fizzing in acid. Dye trapped in cracks suggests a treated stone.
What does pigeon blood agate look like?
It is a deep blood-red to crimson chalcedony, often swirled or banded with grey, white, and translucent zones, with a smooth waxy polish.
Is pigeon blood agate the same as red jasper?
No. Red jasper is opaque and grainy, while pigeon blood agate is a translucent, banded chalcedony.
Is pigeon blood agate dyed?
Some material on the market is dyed. Natural color shows gradients and banding, whereas dyed stones look uniformly intense with color pooling in fractures.