Emerald is a mineral but it is not an acid.
Emerald reacts to the acid test by showing a weak to moderate fizzing or effervescence when it comes in contact with a weak acid like vinegar or lemon juice. This is due to the presence of aluminum and beryllium in emerald's composition, which can react with acids.
an emerald
An organic acid.
malic acid
carboxylic acid
nitric acid
Lactic acid.
cictric acid
What kind of acid and what kind of flooring is very important to this !
It is an organic acid produced from carbohydrate.
Carbonic acid.
What kind of acid? Urine is an example