Zircon

Refractive Index: 1.9389–1.9538
Abbe Number: 35.8–45.1
Crystal System: Isotropic (cubic)
Formation: Natural
Dispersion Data: Measured (published fit)
Fits: 7

Refraction Fits

Fit #1

Shannon / Cauchy

$n$

n

= 1.9430

V_{D}

= 41.1

n^{2} = 1 + \frac{λ ^{2}}{0.3776 ( λ ^{2} - 0.01589 )}

Fit #2— Specimen fit

Shannon / Cauchy

$n$

n

= 1.9389

V_{D}

= 35.8

n^{2} = 1 + \frac{λ ^{2}}{0.3823 ( λ ^{2} - 0.018049 )}

Fit #3— Specimen fit

Shannon / Cauchy

$n$

n

= 1.9441

V_{D}

= 43.2

n^{2} = 1 + \frac{λ ^{2}}{0.3762 ( λ ^{2} - 0.015152 )}

Fit #4— Specimen fit

Shannon / Cauchy

$n$

n

= 1.9429

V_{D}

= 38.5

n^{2} = 1 + \frac{λ ^{2}}{0.3788 ( λ ^{2} - 0.016895 )}

Fit #5— Specimen fit

Shannon / Cauchy

$n$

n

= 1.9447

V_{D}

= 43.2

n^{2} = 1 + \frac{λ ^{2}}{0.3759 ( λ ^{2} - 0.015164 )}

Fit #6— Specimen fit

Shannon / Cauchy

$n$

n

= 1.9443

V_{D}

= 42.4

n^{2} = 1 + \frac{λ ^{2}}{0.3764 ( λ ^{2} - 0.015409 )}

Fit #7— Specimen fit

Shannon / Cauchy

$n$

n

= 1.9538

V_{D}

= 45.1

n^{2} = 1 + \frac{λ ^{2}}{0.3705 ( λ ^{2} - 0.014575 )}

Absorption Specimens

Laos, Champasak Province

Madagascar, Fianarantsoa Province, Ilakaka

Madagascar, Fianarantsoa Province, Ilakaka

Madagascar, Fianarantsoa Province, Ilakaka

Myanmar, Mandalay Division, Mogok (Kyatpyin)

Sri Lanka, Sabaragamuwa Province

Sri Lanka, Sabaragamuwa Province

Sri Lanka, Sabaragamuwa Province

Sri Lanka, Sabaragamuwa Province

Sri Lanka, Sabaragamuwa Province

Sri Lanka, Sabaragamuwa Province, Ratnapura

Sri Lanka, Sabaragamuwa Province, Ratnapura

Tanzania, Arusha Region, Mount Meru

Tanzania, Dodoma Region

Tanzania, Ruvuma Region, Tunduru