Is Your Tiger's Eye Real or Fake?
How to tell genuine tiger's eye from imitations
Tiger's eye is genuine quartz, but two things fool buyers: fiber-optic glass ('cat's-eye glass') sold as tiger's eye, and dyed or heat-treated color — especially red and blue — presented as natural.
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Common tiger's eye fakes & look-alikes
- Fiber-optic glass. Manufactured 'cat's-eye' glass shows a single, razor-sharp, perfectly straight band of light and uniform color. Natural tiger's eye has a softer, slightly wavy band and uneven fibrous color.
- Dyed tiger's eye. Vivid red, blue, or pink tiger's eye is often dyed; color may pool unevenly or look artificially bright. Natural blue is 'hawk's eye' and is more muted.
- Heat-treated red. Much red tiger's eye is heated golden material — not a fake exactly, but not naturally red, and worth less than untreated stone.
Simple at-home tests
- 1Band shape. Natural chatoyancy is a soft, moving, slightly irregular band. A perfectly straight, sharp single light-line usually means fiber-optic glass.
- 2Scratch test. Real tiger's eye is Mohs 7 quartz and scratches glass; the glass imitation will not scratch glass.
- 3Color evenness. Natural gold/brown color is subtly uneven along the fibers; dead-uniform vivid color suggests dye or glass.
At-home tests are indicative, not definitive — for valuable pieces, get a professional gemologist's opinion.
The bottom line
A soft, slightly wavy chatoyant band with uneven natural color that scratches glass is genuine tiger's eye. A sharp straight light-line with uniform color is fiber-optic glass.
FAQ
- How can I tell if my tiger's eye is real?
- A soft, slightly wavy chatoyant band with uneven natural color that scratches glass is genuine tiger's eye. A sharp straight light-line with uniform color is fiber-optic glass.
- Is tiger's eye valuable?
- Generally inexpensive ($1–$15 tumbled), but strong-chatoyancy cabs, towers, and fine cat's-eye pieces reach $30–$150+.
- Is red tiger's eye natural?
- Some is, but much red tiger's eye is produced by heating golden material; dyed pieces also exist.
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