Pyrope-Almandine

Rhodolite

Refractive Index
1.7550
Abbe Number
28.0
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

= 1.7550 = 28.0
n4004505005506006507007501.7201.7401.7601.7801.8001.820

Purplish-red variety of pyrope-almandine. Optical properties identical to parent. Source: GIA / Winchell / Liddicoat gemological tables.

Absorption Specimens