Stone

RI min

RI max

Biref min

Biref max

Dens min

Dens max

Colour

Location

Info

ne min

ne max

no min

no max

Spectrum

UVS

UVL

Reference

alunite

2,49

2,49

apple green (dyed)

79,53ct cabochon, dyed and stabilised by polymer, imitating gaspeite

bright yellow green (dyed)

bright yellow green (dyed)

iigj lab information circular 2016 Vol 73, july 2016