Each piece has unique colouring and is different in their own way. We do not see this as a fault, but part of its gorgeous uniqueness.
Onyx is an absorbent + pourous material, it is important to take good care of your onyx homewares. Harsh chemicals will sink into the stone and cause it to change colour.
- for cleaning - use a soft cloth with soapy water, do not use abrasive cleaners, steel wool, lemon juice - make sure it dries thoroughly
- for stain removal - use a non-abrasive cleaner such as dishwashing soap or a professional stone cleaner solution which can be purchased from hardware stores