d43ae596_mstone_Information___Ruby_Mill__Yes
[Alexandrite] Opal [Chrysoberyl] Opal [Excellent] Poor [Yes_4] No Use a dry or damp cloth to clean. Do not soak in cleaning solutions. Opal is affected by thermal shock, avoid heat and sudden temperature change. [Yes] 
No
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