AltGems
Updated as of June 2026

How to clean and care for Hackmanite

Reviewed by the AltGems editorial team · Updated June 2026

Moderately soft. Clean with warm soapy water and a soft brush. Color may shift with light, which is natural and reversible.

Step by step

  1. Fill a bowl with warm water and a few drops of mild dish soap.
  2. Soak the piece briefly, then gently brush with a soft toothbrush. Be gentle, this stone is softer.
  3. Rinse in clean water (keep a strainer over the drain) and pat dry with a lint-free cloth.
  4. Store in a soft pouch away from harder gems that could scratch it.
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Frequently asked questions

How do you clean Hackmanite?
Moderately soft. Clean with warm soapy water and a soft brush. Color may shift with light, which is natural and reversible.
Can you use an ultrasonic cleaner on Hackmanite?
No. Hackmanite can be damaged by ultrasonic or steam cleaners. Stick to warm soapy water and a soft cloth.
Does Hackmanite scratch easily?
Hackmanite rates 5.75 on the Mohs scale. That is on the softer side, so handle and store it carefully.