HOW BIG can you go..... with the sapphire crystal
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  1. #1
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    HOW BIG can you go..... with the sapphire crystal

    I recently found sources of inexpensive sapphire crystals and watchmakers would can replace them.
    This got me thinking - I can get watches with good looks & movement, replace with sapphire, and voila, I get myself a keeper.

    In talking to a guy about replacing a 40mm crystal, he chuckled and said - don't blame me if it breaks.
    I asked another guy, and he also tried to talk me out of it.

    Does anyone have any insight on this ? Is 40mm too big for sapphire due to its brittleness ?
    The standard size only goes up to 40mm, thickness comes in 1mm or 1.2mm. Is 1.2 thick enough for 40mm ?
    maybe I should opt for the dome crystals (1.3mm thick, I am told). Are dome crystals inherently less likely to break - is that why most big face watches have dome crystals ?

    The Bell&Ross is gotta be at least 40mm across too, no ?
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  2. #2
    Member estrickland's Avatar
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    Re: HOW BIG can you go..... with the sapphire crystal

    My Astron Stratosphere (aka Death Star) has an edge-to-edge curved sapphire crystal which is 45.3mm across (it's a beast):
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    Haven't seen another watch which develops caustics (but the Ressence watches probably do):
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    ... or this crazy lume, due to refraction through the crystal:
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    ... but the watch is truly enormous at 48mm across.
    hkbob, Ayreonaut and Crezo like this.

  3. #3
    Moderator at Large stuffler,mike's Avatar
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    Re: HOW BIG can you go..... with the sapphire crystal

    Not going to discuss the skills and knowledge of the watchmakers you are in contact with. But 55mm domed sapphire is possible, see the Laco 55mm B-Uhr Replika

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    hkbob likes this.
    Kind regards
    Mike


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  5. #4
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    HOW BIG can you go..... with the sapphire crystal

    This is great !
    I feel safer even just walking down the street knowing WUS is on my side

    thanks guys :)
    Last edited by Bradjhomes; April 2nd, 2015 at 10:44.

  6. #5
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    Re: HOW BIG can you go..... with the sapphire crystal

    THere are tons of watches above 40mm with sapphire crystals, heck most sports luxury watches nowadays outside of Rolex are 40+ all the way to 46-48 (some even larger) and they all use sapphire crystals. That said, the quality and sourcing will definitely play a big role in how clear it is, and how durable it is. Not all sapphire crystals and made the same.

  7. #6
    Member sticky's Avatar
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    Re: HOW BIG can you go..... with the sapphire crystal

    I've got a 51mm watch with sapphire but it's rated to 1000M and I read somewhere that the crystal is over 7mm thick.

  8. #7
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    Re: HOW BIG can you go..... with the sapphire crystal

    Quote Originally Posted by hkbob View Post
    This is f---ing great !
    I feel safer even just walking down the street knowing WUS is on my side

    thanks guys :)
    whatch out for the guy at the corner of lion rock road and carpenter road dressed in a red hoody and timberland boots.

  9. #8
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    Re: HOW BIG can you go..... with the sapphire crystal

    Quote Originally Posted by jilgiljongiljing View Post
    THere are tons of watches above 40mm with sapphire crystals, heck most sports luxury watches nowadays outside of Rolex are 40+ all the way to 46-48 (some even larger) and they all use sapphire crystals. That said, the quality and sourcing will definitely play a big role in how clear it is, and how durable it is. Not all sapphire crystals and made the same.
    true that

  10. #9
    Member watch_hor's Avatar
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    Re: HOW BIG can you go..... with the sapphire crystal

    Quote Originally Posted by estrickland View Post
    My Astron Stratosphere (aka Death Star) has an edge-to-edge curved sapphire crystal which is 45.3mm across (it's a beast):
    Name:  sas033_image_21_04022014144207_b_zps99fd7e09.jpg
Views: 454
Size:  35.5 KB
    Name:  SBXA033_3-700x700_zps24e391bf.jpg
Views: 452
Size:  55.2 KB
    Name:  94D1BFDA-D173-4A42-A71D-B780D10D096C_zpsqna5eqxx.jpg
Views: 443
Size:  89.8 KB

    Haven't seen another watch which develops caustics (but the Ressence watches probably do):
    Name:  10FA841D-FBD0-4E78-A6C3-B01DDFDAF582_zpspzjm6wav.jpg
Views: 444
Size:  78.9 KB

    ... or this crazy lume, due to refraction through the crystal:
    Name:  998C3494-C2F0-447D-8452-45B163265FD3_zpsdrvgpafq.jpg
Views: 438
Size:  70.8 KB

    ... but the watch is truly enormous at 48mm across.
    Holy deep dish batman, you could eat a bowl of chowder out of that thing!


    Sent from my iPhone using Tapatalk

  11. #10
    Member VabaX's Avatar
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    Re: HOW BIG can you go..... with the sapphire crystal

    there are plenty that go above 40mm. the thing is though, they also go well above 1.2mm thickness.....
    U aware?

    Omega Seamaster 2531, Oris Aquis, Deep Blue Daynight 65, Omega Date '78, Melbourne Watch Co. Portsea, Tissot V8, Casio Protrek

    You might think I'm gumpy...

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