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SKX013 Flat Sapphire Crystal

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.

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 (OEM Dimension)
    4. Crystal Diameter 28mm (OEM Dimension)
    5. Crystal Thickness 2.8mm (OEM Dimension)
    6. Crystal Dome Height Not Applicable
    7. Anti-Reflective Coating Surface Single Side (Underside) or Double Side (Topside and Underside)
    8. Anti-Reflective Coating Color Clear, Blue
    9. Tint Clear AR: Colorless. 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. Swiss Super-LumiNova® BGW9 Dials
    2. Swiss Super-LumiNova® BGW9 Hands
    1. A Complete Guide On How To Mod Your SEIKO Sapphire Crystal (Includes Photos & Video)

Customer Reviews

Based on 16 reviews
Paul (Auckland, NZ)
Using this mod part for: New 013 Case.
013 Flat Sapphire Crystal

Came packaged really well. Fitted into the new LA 013 case with some time and care perfectly. Looks good. !!!

David D. (Singapore, SG)
Using this mod part for: SKX013
Bezel Ring insert and Crystal

First time playing with it and it's not hard at all.
Love the new look of the watch.
Thank you.

natawat s. (Bangkok, TH)
013 sapphire crystal

Very happy with this item to completed mod watch for my friend as birthday gift.

PJ (Bangkok, TH)
Using this mod part for: skx013
Prefect crystal replacement

This was my first time doing a crystal replacement and everything when smoothly. Sapphire crystal arrived promptly and in prefect condition. Appreciate the hand written note, will purchase from this store again, can't wait for my next mod :)

H’ng E.O. (Kuala Lumpur, MY)
Using this mod part for: SKX013
If you want a sapphire crystal for the skx013, here's the place

Ordered a flat sapphire crystal for my skx013. It fits like a glove and made my 013 so much cooler with a blue tint at certain angles. I'm a happy man =D

Jaeho L. (Gangnam-gu, KR)
Using this mod part for: SKX013, Sapphire Ar glass
I received fast delivery from a very reliable store.

I received a high quality cheap sapphire glass single sided AR coated product more than 2 weeks ago, incredible fast delivery despite COVID19, unfortunately the SKX013 casing has just arrived and took a picture together but I don't know how to upload it. , I'm sure Lucius Atlier is a very reliable conscientious store. 성질급한 한국인 입장에서 빠르고 정확한 믿을 수 있는 상점임.

Katsutaka K.
Modesty flat sapphire!

This is OEM type flat sapphire , so modesty . And I want more sapphire with double dome .

ISKREN M. (Kawaguchi, JP)
Delivery problem

I am sad to say, that I did not receive the purchased parts. I presume, the problem occurred due to corona. I don’t think I can blame you, but alas I cannot give 5 stars for something I did not get to see.

Joemark (Sydney, AU)

Fast shipping and quality product, cheers Adriel

John L. (Edmonton, CA)
Using this mod part for: 013
Great fit, thanks

Fits my SKX013 perfectly and looks great, thank you.