Lithium Niobate (LiNbO₃) — Lab-Grown Brilliance from the Edge of Optics

💎 Lithium Niobate Rough — High-Tech Crystal with a Lapidary Soul

Meet one of the most remarkable crystals ever grown for science — and a hidden gem for the adventurous faceter. Lithium Niobate (LiNbO₃) is a Czochralski-pulled single crystal best known as a workhorse of modern photonics, used in electro-optic modulators, frequency doublers, and surface acoustic wave devices. But beneath its industrial pedigree lies something extraordinary: a brilliant, strongly birefringent crystal with dispersion well above that of diamond and an unmistakable "doubled-facet" optical effect that makes every cut stone feel alive.

For collectors and lapidaries chasing the unusual, Lithium Niobate is a chance to facet a material that lives at the intersection of cutting-edge optics and old-school crystal artistry.

✨ Key Features:

• Color: Typically colorless to pale straw or faint yellow; undoped material is water-clear with a subtle warm cast
• Fire/Dispersion: Very high (~0.13) — roughly three times that of diamond
• Hardness: ~5–5.5 on the Mohs scale — best suited for pendants, earrings, or protected settings
• Refractive Index: Strongly birefringent — nₒ ≈ 2.30, nₑ ≈ 2.21, producing a vivid doubling effect through the stone
• Density: ~4.65 g/cm³
• Melting Point: ~1257 °C (2295 °F)
• Origin: Lab-grown via the Czochralski pulling method
• Cleavage: None, but brittle and sensitive to thermal shock — cut with patience and light pressure
• Bonus Quirk: Pyroelectric and piezoelectric — temperature changes can briefly attract dust to the surface, a fingerprint of its electro-optic nature

Whether you're after a uniquely birefringent design subject, a high-dispersion alternative to the usual suspects, or simply a conversation-starter crystal with a story rooted in laser labs and fiber optics, Lithium Niobate delivers a one-of-a-kind cutting experience. Each piece is sold by weight and offers a window into a material few faceters have ever worked.

📸 Additional Notes:

• If you would like to see additional pictures of the piece(s) you're interested in, please feel free to contact me. I'll be happy to provide more images for your review.
• The color of the stone in the photo may vary slightly, as not all computer monitors are calibrated the same.