Allergies to tungsten carbide rings are rare. They typically occur if the ring contains nickel or cobalt, which are common allergens for some people.
Tungsten jewelry is generally hypoallergenic, especially when it’s pure or alloyed with other hypoallergenic materials like carbon. It’s a good choice for those with metal allergies.
A rash from a tungsten ring may be due to a nickel or cobalt allergy, common additives in some tungsten alloys. It could also be from irritation or moisture trapped under the ring.
Some tungsten carbide rings contain nickel, used to bind the tungsten particles. However, high-quality tungsten carbide rings are often nickel-free to prevent allergic reactions.
Tungsten is usually OK for sensitive skin, especially in its pure form or when alloyed without nickel or cobalt. It’s a hypoallergenic option for most individuals.