Staining/discoloration on sapphire crystal?
Staining/discoloration on sapphire crystal?
Hey all! Hoping you may have some guidance/suggestions here.
I recently returned from a beach trip where I wore my Scurfa MS21 daily. Upon returning, I noticed some staining/discoloration on the sapphire crystal, which I attempted to photograph the best I could. I attempted cleaning it with dish soap thinking it could be left behind sunscreen/oil, but doesn't appear to have made any change.
Very possible that sunscreen, bug spray, etc got sprayed onto the crystal and sat for days, I wasn't overly mindful of it. But I'm curious if you all have any thoughts about how I could clean/remedy this, or if you've encountered anything similar before.
It's not the end of the world, and hardly noticeable most of the time, but if it's possible to clean it up I'd like to.
Thanks in advance for any advice!
I recently returned from a beach trip where I wore my Scurfa MS21 daily. Upon returning, I noticed some staining/discoloration on the sapphire crystal, which I attempted to photograph the best I could. I attempted cleaning it with dish soap thinking it could be left behind sunscreen/oil, but doesn't appear to have made any change.
Very possible that sunscreen, bug spray, etc got sprayed onto the crystal and sat for days, I wasn't overly mindful of it. But I'm curious if you all have any thoughts about how I could clean/remedy this, or if you've encountered anything similar before.
It's not the end of the world, and hardly noticeable most of the time, but if it's possible to clean it up I'd like to.
Thanks in advance for any advice!
- JP Chestnut
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Re: Staining/discoloration on sapphire crystal?
Seems weird. Is it AR coated on the outside? If so, you might have ruined the coating somehow.
Re: Staining/discoloration on sapphire crystal?
That was my initial thought, and that could definitely be the case.JP Chestnut wrote: ↑Wed Jun 22, 2022 2:35 pmSeems weird. Is it AR coated on the outside? If so, you might have ruined the coating somehow.
According to the spec sheet, Scurfa says the MS21 has an AR coating on the underside, but doesn't mention the top.
If it is the AR coating, I'll probably just go ahead and try to remove the rest of the coating from the outside.
- tattoo chef
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Re: Staining/discoloration on sapphire crystal?
Just shoot an email to Paul, he’ll help figure it out.3migo wrote:That was my initial thought, and that could definitely be the case.JP Chestnut wrote: ↑Wed Jun 22, 2022 2:35 pmSeems weird. Is it AR coated on the outside? If so, you might have ruined the coating somehow.
According to the spec sheet, Scurfa says the MS21 has an AR coating on the underside, but doesn't mention the top.
If it is the AR coating, I'll probably just go ahead and try to remove the rest of the coating from the outside.
Also; are you sure it’s on the outside and not weird condensation on the inside of the crystal that’s messed with the internal AR?
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Re: Staining/discoloration on sapphire crystal?
Doesn't seem to be any sort of condensation. I don't see any fogging or anything else inside the case/under the crystal.tattoo chef wrote: ↑Wed Jun 22, 2022 3:01 pmJust shoot an email to Paul, he’ll help figure it out.3migo wrote:That was my initial thought, and that could definitely be the case.JP Chestnut wrote: ↑Wed Jun 22, 2022 2:35 pmSeems weird. Is it AR coated on the outside? If so, you might have ruined the coating somehow.
According to the spec sheet, Scurfa says the MS21 has an AR coating on the underside, but doesn't mention the top.
If it is the AR coating, I'll probably just go ahead and try to remove the rest of the coating from the outside.
Also; are you sure it’s on the outside and not weird condensation on the inside of the crystal that’s messed with the internal AR?
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- toxicavenger
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Re: Staining/discoloration on sapphire crystal?
rub some toothpaste on it to see if it will remove it. i had the same thing happen on a rolex. freaking bug spray like etched the crystal.
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Re: Staining/discoloration on sapphire crystal?
Bug spray has some nasty stuff in it that will affect watch crystals. Like terry said above, try some toothpaste or other mild polish.
Re: Staining/discoloration on sapphire crystal?
I know DEET can damage acrylic, but I had no idea it could stain glass or sapphire.
Re: Staining/discoloration on sapphire crystal?
I get waterspots/staining on my Sinn watches with AR coatings and they dont come off . On non-AR crystals, toothpaste will usually take it off the waterspots.
"My balls was hot" - Derrick Lewis
Re: Staining/discoloration on sapphire crystal?
Thanks for the toothpaste recommendation! I'll give that a try.
I had tried Dawn dish soap previously with no luck. Emailed Paul and he confirmed that the MS21 doesn't have an outer AR coating, so it's likely something just cooked onto the crystal.
I had tried Dawn dish soap previously with no luck. Emailed Paul and he confirmed that the MS21 doesn't have an outer AR coating, so it's likely something just cooked onto the crystal.
Re: Staining/discoloration on sapphire crystal?
I've ruined polycarbonate sunglasses this way for sure. I don't recall it happening to glass lenses but if I'm using DEET it's usually while working and I have safety rated polycarbonate glasses on.
Re: Staining/discoloration on sapphire crystal?
I might try a 50:50 distilled water: white vinegar soak first.3migo wrote:Thanks for the toothpaste recommendation! I'll give that a try.
I had tried Dawn dish soap previously with no luck. Emailed Paul and he confirmed that the MS21 doesn't have an outer AR coating, so it's likely something just cooked onto the crystal.
Re: Staining/discoloration on sapphire crystal?
Toothpaste+toothbrush did the trick perfectly. Thanks all for the help!
- toxicavenger
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Staining/discoloration on sapphire crystal?
I use Novus - learned this trick long ago when I used it on my helmet face shields.
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