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| Joined: | Sun Sep 4th, 2005 |
| Location: | Florida &, Arizona USA |
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e.avery wrote:Most ETA movements use Mineral Glass.
Do you know if this is true of the ETA 2892-2 movement? If you do not know how could I find out? I have a watch with that movement that is ready to be cleaned, lubricated and recalibrated. If the watch is using mineral glass is the longevity of the movement any different than if it had lab created jewels? Thanks.
John
I do not know if the ETA thing is a true statement, but, scientifically, yes, synthetic Sapphire is harder than mineral crystal so it will last longer, BUT, it is probably over such a long time period as to make it superfluous to the operation of the watch!