Garnet

Andradite

Refractive Index: 1.8893
Abbe Number: 25.9
Crystal System: Isotropic (cubic)
Formation: Natural
Dispersion Data: Measured (published fit)
Fits: 1

Refraction Fits

Fit #1

Shannon / Cauchy

$n$

n

= 1.8893

V_{D}

= 25.9

n^{2} = 1 + \frac{λ ^{2}}{0.4183 ( λ ^{2} - 0.024145 )}

Absorption Specimens

South Africa, North West Province, Buffelsfontein