d43ae596_mstone_Information___Ruby_Mill__Yes
[Alexandrite] Iolite [Chrysoberyl] Cordierite [Excellent] Fair [Yes_4] Yes Use a commercial jewellery cleaner or a mild soap & water solution and clean with a soft toothbrush.. Acids can damage iolite, check cleaning products for the inclusion of acids and avoid. [Yes] 
Yes
Y e s
N o
Y e s U n l e s s c o a t e d
Gemstone Care - Gemstone Information - Ruby Mill
Yes