WTB 90% Plat/ 10% IR mixture band

[Curby311]

I'm hoping that some PSers can help me out. I am trying to find a platinum band that has the mixture of: 90% Platinum/ 10% Iridium mixture. Most of the bands that I have found online are the 950 plat which was different than the setting I was looking at which is 90 PLAT/10 IR. I have discovered that I am allergic to palladium so I want to make sure that I don't have an issue with platinum alloy before I get my engagement ring made. My max budget amount is $500 and I am open to pre-loved. I love the CVB bands but since this is more of a prolonged allergy test I don't think I can be real picky about the style.
Thanks all for any assistance you can provide.

 

[Tophat1]

Found this on Etsy - the supplier should be able to answer what the other 10% is. I would guess Ir.

https://www.etsy.com/listing/268505...tent=5366351&gclid=CNiOj4fonNMCFduEswodhCoEQg

 

[Curby311]

Found this on Etsy - the supplier should be able to answer what the other 10% is. I would guess Ir.

https://www.etsy.com/listing/268505...tent=5366351&gclid=CNiOj4fonNMCFduEswodhCoEQg

Thanks for the tip. I asked the Etsy seller what the alloy and percentage was that is used to make the ring but they responded that they didn't know they just buy it and it says 900 PLAT.

 

[foxinsox]

This one is definitely 90:10 Plat Iridium https://www.etsy.com/nz/listing/478474500/vintage-platinum-wedding-band-keeper-or