Gemmological Report #2025-12Public

Natural Pollucite

Report Information

Stone Identification
Natural Pollucite
Created
February 20, 2026
Updated
February 22, 2026
Gemmological Report #2025-12 headline

(colors may be distorted)

Gemological Properties

Shape / Cutting Style
Cushion
Measurements
19.35-16.85 x 13.10 mm
Carat Weight
28.03 ct (5.6060 g)
Specific Gravity
2.83(hydrostatic weight)
Refractive Index
1.521
Double Refraction
Not applicable
Polariscope
single refractive (isotropic)
Pleochroism
Not applicable
Microscope
light colored mica inclusion, typical for pollucite
Fluorescence SW
SW (254 nm) - strong yellow
Fluorescence LW
LW (365 nm) - inert
Treatment
none detected

Images

(colors may be distorted)

Inclusion

Raman Spectroscopy

The Raman spectrum corresponds to pollucite. See the RRUFF database (https://www.rruff.net/) for comparison