Rutile

Refractive Index: 2.6129–2.9087
Abbe Number: 9.2–9.9
Crystal System: Uniaxial
Formation: Natural
Dispersion Data: Measured (published fit)
Fits: 1

Refraction Fits

Fit #1— DeVore 1951

DeVore

Valid 0.43–1.53 µm

$n_{ω}$ ordinary

n_{ω}

= 2.6129

V_{ω}

= 9.9

n_{ω}^{2} = 5.913 + \frac{0.2441}{λ ^{2} - 0.0803}

$n_{ε}$ extraordinary

n_{ε}

= 2.9087

V_{ε}

= 9.2

n_{ε}^{2} = 7.197 + \frac{0.3322}{λ ^{2} - 0.0843}

J.R. DeVore, "Refractive indices of rutile and sphalerite," J. Opt. Soc. Am. 41, 416–419 (1951)

Absorption Specimens

Sri Lanka, Sabaragamuwa Province, Embilipitiya