Stone

RI min

RI max

Biref min

Biref max

Dens min

Dens max

Colour

Locality

Info

nx min

nx max

ny min

ny max

nz min

nz max

Spectrum

UVS

UVL

Reference

viitaniemiite

1,54

1,557

3,1

3,1

colourless

4,86ct, biaxial negative

strong yellow

weak orange

Gems & Gemology 2025 Spring, p71