Hi mate
Sorry for confusion... I was referring to the construction method used by OP (I missed out a word)- Here is Extract from Barts original thread
Manufacturing the Dome Crystals for PAM 212 and the larger PAM 127
Okay fellas, I thought I would pass along the information I have learned on the latest 1:1 crystal project. Below are the steps that Panerai's sub contractor uses to make one of their crystals.
The biggest hurdle, I am told, is the set labeled number 5 above. If the second mold is not lined up perfectly, the whole crystal is considered a 'reject' and is a waste of product. In mass manufacturing like this, a loss of over 5% can be disastrous to the bottom line.
This is why (I believe), this project has never been completed to anyway near 1:1 proportions with genuine sapphire.
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This is how a mineral crystal is made:
Obviously, the mineral Crystals are easier and far cheaper. But they will break easier.