Celestite

Refractive Index: 1.6248
Abbe Number: 74.1
Crystal System: Isotropic (cubic)
Formation: Natural
Dispersion Data: Measured (published fit)
Fits: 1

Refraction Fits

Fit #1

Shannon / Cauchy

$n$

n

= 1.6248

V_{D}

= 74.1

n^{2} = 1 + \frac{λ ^{2}}{0.625 ( λ ^{2} - 0.00848 )}

Absorption Specimens

United States, Colorado (Weld County), Stoneham (Sterling Mine)