Triplock Posted April 22, 2016 Report Share Posted April 22, 2016 Recently completed Milgauss with genuine crystal and Swiss ETA 2836-2. The rep crystal is pretty nice with its AR coating, but it can't compare to the gen crystal. Rolex has this to say about its green sapphire: "Green sapphire crystal - A unique watch crystal in green sapphire developed in 2007 by Rolex. Scratchproof, fade-proof and available exclusively on the Milgauss. Its light green shade, tinted throughout the entire crystal, turns nearly luminescent at the bevelled edges. The result of a secret process that required years of development to master and takes weeks to produce. Not patented, as it is so difficult to make that no one else would even venture to try." So that's the reason the replica makers have not released a green sapphire crystal. What's interesting about the genuine crystal is that green only appears at certain angles and in certain lighting. The photos might make it look like you're walking around with a luminescent green circle on your wrist, but that's not the case. It looks quite normal until the light catches it just right and you get a brief and brilliant flash of color. Fascinating! 1 Quote Link to comment Share on other sites More sharing options...
Revere Posted April 22, 2016 Report Share Posted April 22, 2016 Very nice. My dad's gen milgauss is so nice to look at, I love the green crystal. I'm not sure how difficult the process truly is. I'm assuming it has to do with doping the sapphire crystal with some contaminant, and it changes the coloring in that way. To get full transparency with just a green tint, it's probably on the order of parts per million or something like that. Semiconductor industry has been doing that for a long time with silicon, germanium, and other materials. Maybe they just want to make it sound fancy 1 Quote Link to comment Share on other sites More sharing options...
Triplock Posted April 22, 2016 Author Report Share Posted April 22, 2016 31 minutes ago, Revere said: Very nice. My dad's gen milgauss is so nice to look at, I love the green crystal. I'm not sure how difficult the process truly is. I'm assuming it has to do with doping the sapphire crystal with some contaminant, and it changes the coloring in that way. To get full transparency with just a green tint, it's probably on the order of parts per million or something like that. Semiconductor industry has been doing that for a long time with silicon, germanium, and other materials. Maybe they just want to make it sound fancy Glad you like Yes, it could be they're making sound more difficult than it really is, but has any other watch company made anything similar? There's some interesting info on the subject on TRF. Rumor has it that Rolex uses the "hydrothermal method". Quote Link to comment Share on other sites More sharing options...
jcsbomber Posted April 22, 2016 Report Share Posted April 22, 2016 Gorgous! If that beauty ever goes to the sales corner, it'll go in a flash! Sent from my SM-N910V using Tapatalk 1 Quote Link to comment Share on other sites More sharing options...
themannier Posted April 22, 2016 Report Share Posted April 22, 2016 You have a great tool to remove the spring bars next to your watch... Congrats on this mod, find a gen chrystal like this is not easy ! 1 Quote Link to comment Share on other sites More sharing options...
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