24x L Tumble Stone - Peruvian opal

Not automatically. Tumbling smooths and polishes the surface, but it does not necessarily remove every natural inclusion, fracture or indentation. A stone with normal mineral features is acceptable; obvious fresh breaks, sharp damaged edges or significant chips should be treated differently.

No. Different gemstones react differently to water, heat, chemicals and ultrasonic cleaning, so one intensive cleaning method should not be recommended for the whole collection. A soft cloth is the safest general starting point; where suitable, gentle cleaning with mild soapy water is preferable to strong chemicals, steam or ultrasonic equipment.

It can. Hardness and toughness vary considerably between gemstones, so some stones tolerate knocks better than others. Customers carrying stones in a pocket or bag should ideally keep them away from keys, coins and harder objects if they want to preserve the polish.

Crystal associations can be described as spiritual traditions or personal beliefs, but medical or therapeutic effects should not be presented as proven facts.