Garnet

Grossular

Refractive Index: 1.7383–1.7416
Abbe Number: 59.0–61.6
Crystal System: Isotropic (cubic)
Formation: Natural
Dispersion Data: Measured (published fit)
Fits: 2

Refraction Fits

Fit #1

Shannon / Cauchy

$n$

n

= 1.7383

V_{D}

= 61.6

n^{2} = 1 + \frac{λ ^{2}}{0.5099 ( λ ^{2} - 0.010394 )}

Fit #2— Specimen fit

Shannon / Cauchy

$n$

n

= 1.7416

V_{D}

= 59.0

n^{2} = 1 + \frac{λ ^{2}}{0.5077 ( λ ^{2} - 0.010833 )}

Absorption Specimens

Mali, Kayes Region, Diakon

Tanzania, Arusha Region, Lelatema Mountains

Tanzania, Arusha Region, Lelatema Mountains

Tanzania, Arusha Region, Lelatema Mountains

Tanzania, Arusha Region, Lelatema Mountains