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In order to keep gems looking as vibrant and valuable as on the first day of purchase, it is very important to keep in mind a few basic rules and learn some specific cleaning techniques.

Gems should be cleaned regularly to keep them looking their best. The safest way to clean them is by soaking loose stones or jewelry in a warm, soapy water and gently clean with a soft brush. Dry with a soft cloth.

Soft porous gems (pearls, coral, amber) should never be soaked. Simply wipe clean with a moist cloth. Organic gem can be damaged by improper cleaning.

Always consult a professional jeweler when you have a question or are unsure about cleaning gems or jewelry.

Gem Type DO DO NOT
Amethyst Ammonia soak & brush. Ultrasonic & boiling with care. Strong heat & abrupt temperature changes (shocking).
Aquamarine Sonic. Ammonia soak & brush. Ultrasonic with care. Boiling. Acids.
Citrine Ammonia soak & brush. Boiling & ultrasonic by jeweler. Strong heat (may change color).
Kunzite Ammonia soak, rinse, & brush. Boil, ultrasonic, acid. Heat & strong light (may change color).
Peridot Ammonia soak & brush. Boil with care. Strong heat & abrupt temperature changes (may crack). Acid.
Quartz Ammonia soak & brush. Boiling & ultrasonic with care. Strong heat & abrupt temperature changes (shocking).
Sapphire, Ruby Soapy water & brush. Boiling & ultrasonic with care. Glass-filled stones cleaned by jeweler only.
Spinel Boiling & sonic. Ultrasonic with care. Ammonia soak & brush. Avoid temperature shock. Extreme heat (may fade).
Topaz, Imperial topaz Ammonia soak & brush. Boil & ultrasonic. Temperature shock (will fracture).
Tourmaline Ammonia soak & brush. Heat, boiling, & steam (may change color).
  • First Published: September-25-2006
  • Last Updated: October-06-2010
  • © 2005-2014 all rights reserved.
    Reproduction (text or graphics) without the express written consent of (SETT Company Ltd.) is strictly prohibited.
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