Blackening of the fingertips can be caused by several factors, including bruising from injury, poor circulation, or exposure to certain chemicals. Conditions like peripheral artery disease or Raynaud's phenomenon can restrict blood flow, leading to discoloration. Additionally, infections or underlying health issues, such as Diabetes, can also result in darkened skin. If the discoloration persists or is accompanied by other symptoms, it’s important to seek medical advice.
Bugs are wiping their asses on them
Without knowing more details could be many causes. Is this a chronic condition? Could be Raynaud's phenomenonhttp://www.answers.com/raynauds or combination of other related circulatory problems such as arthritis, polymyositis, carpal tunnel, drugs, exposure to cold, lupus etc. etc.
a smoker's teeth are yellow. - skin is yellow-ish - finger tips turn yellow. - if their breaths stink..
Rusting
it is not gold, it could be gold plated or brass
capillaries run into your fingers some end there but some turn around and go back down
Yes, It can turn the crystal black and permanently damage it.
Mold
Gravitation.
When the leaf tips of pecan and oak trees turn black, it often indicates a problem with environmental stress or disease. Common causes include inadequate watering, root damage, or pest infestations. In some cases, it may also result from fungal infections or nutrient deficiencies. It's essential to assess the overall health of the tree and consult with an arborist for a proper diagnosis and treatment.
Brake dust!
Tulsi leaves turn black due to oxidation, which occurs when the leaves are exposed to air for a prolonged period of time. This process causes the leaves to lose their green color and turn black.