Tanzigrrl
Brilliant_Rock
- Joined
- Sep 17, 2010
- Messages
- 744
Hi All, I have an in-home safe that is permanently floor-mounted. We set the heater to 66 degrees in the winter and I don't live in a notorious cold climate although we do get occasional snow. Is my tanzanite jewelry okay living in a cold-ish safe? I don't know how cold it is in there, but I do know that when I take my watch out, for example, the metal is chilly against my skin. Does thermal shock only pertain to extremes of hot to cold within a short amount of time or is there an upper and lower temperature limit that tanzanites can tolerate? Thank you for any advice.