Crystals

Thread: Crystals

Results 1 to 5 of 5
  1. #1
    Member
    Join Date
    Jan 2007
    Location
    Maryland
    Posts
    484

    Crystals

    Is there a substantative difference between a mineral glass crystal and a sapphire crystal in terms of durability, scratch resistance or other factors? Thanks in advance.

  2. #2
    stuffler,mike
    Guest

    Re: Crystals

    Quote Originally Posted by orahu View Post
    Is there a substantative difference between a mineral glass crystal and a sapphire crystal in terms of durability, scratch resistance or other factors? Thanks in advance.
    Three types of crystal are used in watches:

    1. Acrylic plastic crystal

    The least scratch-resistant...

    2. Mineral crystal

    A mineral crystal is a "mix-up" of several mineral elements that are manufactured and treated by heat procedures to create a hardness. This process is made to make it more scratch resistant

    3. Sapphire crystal

    Known as the most durable and scratch-resistant crystal.
    It’s app. 4 times harder than a mineral crystal and 20 times harder than acrylic plastic.

    For more info you may read this

  3. #3
    Member
    Join Date
    Jan 2007
    Location
    Maryland
    Posts
    484

    Thumbs Up Re: Crystals

    Mike: That was a wonderful link -- I learned a lot, including about crystals. Thanks a lot!

    Ron

  4. Remove Advertisements
    WatchUSeek.com
    Advertisements
     

  5. #4
    stuffler,mike
    Guest

    Re: Crystals

    Pleasure to me

  6. #5
    Member
    Join Date
    May 2006
    Location
    Sydney, Australia
    Posts
    767

    Re: Crystals

    There's also a pretty fair collection of still photos on the manufacturing process of synthetic sapphire crystals as part of a short video on the Breitling website. Click on "Made by Breitling" and then "Crystal", there is an audio commentary to explain what you are seeing.
    Last edited by G M Fude; January 14th, 2007 at 01:25.
    Steve

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

    Similar Threads

    1. Thermocompensation: Methods and Movements
      By hedrick in forum High Accuracy Quartz watches
      Replies: 40
      Last Post: 1 Day Ago, 07:52
    2. Thermocompensation: Methods and Movements
      By hedrick in forum Links & Articles
      Replies: 14
      Last Post: October 29th, 2006, 15:31
    3. Omega acrylic crystals
      By Hewybaby in forum Vintage & Pocket watches
      Replies: 1
      Last Post: July 21st, 2006, 03:26
    4. watch crystals
      By Simon St in forum Omega
      Replies: 11
      Last Post: May 1st, 2006, 03:50
    5. Anti-reflective coatings on watch crystals -- by jean-michel
      By Ernie Romers in forum Links & Articles
      Replies: 0
      Last Post: May 3rd, 2005, 10:33

    Posting Permissions

    • You may not post new threads
    • You may not post replies
    • You may not post attachments
    • You may not edit your posts
    •