God some of you are denser than pure gold.
1. Hypersensitive isn't an allergy.
2. Many of these studies fail to account for the gold type, which is fine because people sensitive to 24k gold is beyond rare.
3. That 24k gold ring you're allergic to? Maybe it's a 14k ring forged in Mumbai, sucker. Or you're just blessed or cursed with an allergy, NOT to gold. Why, see below, you got scammed.
4. Pure gold is like 2.5 on the Mohs scale, they are NOT crafted into jewellery, I don't know what you fuckers are trying to argue.
5. 24k gold believe it or not, isn't pure gold, it's 99.99% gold, the 0.01% might be nickel and other stuff. Even the raw gold found by Black children in Jewish ran mines could contain small amounts of impurities. Guess which component the "ultra-blessed" is allergic to? Yeah, the 0.01% was enough to cause discomfort.
Edit: think about it this way, if you walk near a lake once, you're likely not gonna get wet. How about every day for 3 years? If you wear a 24k gold ring for a week, you won't see a rash. Now wear it for 3 years, oh here comes the annoying rash, guess you're allergic to the 99.99% gold instead of God having humour.
This is what happens when you rely on google for your "answers". I don't care what studies that suit your confirmation bias you've linked.
So what is more likely, a 5'1 man (<3% American males) is also allergic to 24k gold, or his paw paw's pimp ring is 12k garbage with more nickel than the amount of White European genes in his Mexican daddy?