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SKX013 Flat Sapphire Crystal - High Top Big Bevel

AR Coating Surface
AR Coating Color

Sapphire ranks among the top of the list on Mohs scale, second to diamonds, when it comes to high resistant to scratching and abrasion. Additionally, given its very wide optical transmission band, these features make sapphire an excellent choice in watch crystal application.

On top of a great material, adding anti-reflective (AR) coating ensures you get the clearest and flawless view of your watch dial. A double sided AR coated sapphire crystal carries a superior clarity compared to single sided AR coating.

Our single sided double domed sapphire crystal has AR coating on the underside of the crystal, while double sided has AR coating on both the topside and underside of the crystal.

Notably, each side are given at least triple layers of AR coating. This resulted in a higher resistance to scratches.

This sapphire crystal has a high top big bevel that protrudes with a presence and is designed to sit flush on our SKX013 Ceramic Bezel Inserts with a slope inclination.

Pairs with:
  1. SKX013 Bezel Inserts (Slope)

Made exclusively for us with quality assurance by ISO 9001 Certified manufacturers.


SAPPHIREsapphire crystal graphic icon


FLATflat sapphire crystal icon


SINGLE SIDED AR COATsingle sided anti-reflective coating graphic icon


DOUBLE SIDED AR COATdouble sided anti-reflective coating graphic icon


    1. Quality Swiss Production Quality, ISO 9001 Certified
    2. Material Sapphire
    3. Crystal Shape Flat
    4. Crystal Diameter 28mm
    5. Crystal Thickness 4.4mm
    6. Crystal Dome Height Not Applicable
    7. Anti-Reflective Coating Surface None, Single Side (Underside) or Double Side (Topside and Underside)
    8. Anti-Reflective Coating Colour Clear, Blue
    9. Tint Clear AR: Colourless. Blue AR: Slightly brown.
    10. Optical Distortion None
    11. Fit Models SKX013, SKX015, SKX017 and all 7S26-0030 Watch Cases
    1. 1x Sapphire Crystal

    All photos of watches with modification parts are for illustration purposes only and are not included with modification parts purchased.

  • Recommended Mods With:

    1. SKX013 Bezel Inserts with Slope Inclination
    1. A Complete Guide On How To Mod Your SEIKO Sapphire Crystal (Includes Photos & Video)

Customer Reviews

Based on 7 reviews
Aaron I. (Melbourne, US)
Using this mod part for: SKX013
Submariner with GMT

The parts I received seem like high quality and I’m excited to start my build. I was not able to source everything I needed from luciusatelier so I am waiting for those parts to arrive.

Using this mod part for: SKX013
I haven't used it because I haven't got all the parts yet.

It looks good, so I'm looking forward to incorporating it.

Wyatt B. (Hudson, US)
Using this mod part for: SKX013
High Top Sapphire Crystal

High quality product. Looks fantastic as well.

Peter A. (Corona, US)
Using this mod part for: Skx013
A great product for the mod.

The sapphire is very clear and the packaging is very well made. My watch came with a double dome sapphire, it was fine but I prefer this High top . I highly recommend this product and any other items Lucius Atelier has to offer. I also appreciate the note that came with it from Adriel.

Reinhold F. (Baguio City, PH)
Using this mod part for: SKX013

The packaging that it came with was a bit crushed however the watch itself is in perfect condition! The moment i opened it i was amazed at how the quality and the movement is top notch!

Rene C. (Veracruz, MX)
Using this mod part for: SKX013
Excellent Crystal AR

I have received my sapphire crystals and they really have an excellent quality. I am very happy with this product.
very fast shipping and a magnificent personalized attention
many thanks to
lucius Atelier

Chris B. (London, GB)
Using this mod part for: SKX013
Great product, communication and fast Delivery

So pleased with the parts I ordered, very good quality, fast shipment, and fantastic communication with a personalised hand written note too! Will be buying from here again