DeepSeaDan
Well-Known Member
- Joined
- Jun 9, 2013
- Messages
- 471
- Reaction score
- 942
- Points
- 93
Greetings,
This old, broken black bottle shows a definite bluing of glass in the pontil area
- can anyone explain the process that created this bluish tinge to the glass around the pontil?
This old, broken black bottle shows a definite bluing of glass in the pontil area