Uncommon James Mini Silver Heart Necklace

I am 98% sure that I developed an allergy bc of this necklace that they claim is “sterling silver”. I truly do not think it’s fully sterling silver…. just bc it’s says 925 on the clasp doesn’t mean it’s true for the entirety of the necklace. The true testament is within the wear. I’ve worn this necklace for months with no problem. I would rarely take it off. And also, I only wear sterling or white gold. I found that after months of wear, this necklace broke me out in a rash around my neck which is quite itchy. May be it’s a fluke thing but prob not. The rash has diminished since the discontinuance of wear. I wanted to leave my review bc someone else could possibly have the same reaction and benefit from my review. This pics reflect me taking off the CJ necklace around 12 hrs ago.