Do not place these stones in chemical cleaners:
- Amber
- Aquamarine
- Coral
- Emerald
- Jade
- Lapis Lazuli
- Malachite
- Opal
- Pearls
- Shell
- Turquoise
This is not an exhaustive list. If you are in any doubt, please contact a professional for advice.
Stones that can change color with prolonged exposure to direct sunlight:
- Amethyst
- Ametrine
- Aquamarine
- Aventurine
- Beryl
- Celestite
- Chrysoprase
- Citrine
- Hiddenite
- Kunzite
- Rose Quartz
- Smoky Quartz