Crocoite

Refractive Index: 2.3500
Abbe Number: 12.0
Crystal System: Isotropic (cubic)
Formation: Natural
Dispersion Data: Approximate (from n, V)
Fits: 1

Refraction Fits

Fit #1— Cauchy from (n_D, V_D)

Cauchy approximation

Valid 0.38–0.78 µm

$n$

n

= 2.3500

V_{D}

= 12.0

n (λ) = 2.1804 + 0.058891/ λ^{2}

Lead chromate; very high dispersion. Approximate from Winchell. Source: GIA / Winchell / Liddicoat gemological tables.

Absorption Specimens

Australia, Tasmania State (Zeehan District), Dundas

Australia, Tasmania State (Zeehan District), Dundas