lisa c
Perpetual Pearl Student
- Joined
- Jun 28, 2009
- Messages
- 3,588
I broke a post in just that fashion trying to remove a pearl. It's called IMPATIENCE ().
Pearl and metals heat at different rates. The post breaks like that when you try to twist the pearl off with force before it has warmed enough to expand away from the post all the way around.
The metal closer to the outside has warmed, the metal deepest in the pearl hasn't caught up temperature-wise, and the twisted groove on the post is a point of vulnerability, thinner. The hotter, closer to the surface, softer metal sheared off where the metal of the post was cooler and harder.
The jeweler should've slowed down after the first post was broken.
Pearl and metals heat at different rates. The post breaks like that when you try to twist the pearl off with force before it has warmed enough to expand away from the post all the way around.
The metal closer to the outside has warmed, the metal deepest in the pearl hasn't caught up temperature-wise, and the twisted groove on the post is a point of vulnerability, thinner. The hotter, closer to the surface, softer metal sheared off where the metal of the post was cooler and harder.
The jeweler should've slowed down after the first post was broken.
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