Sapphire is commonly subjected to enhancement processes or treatments such as heating and diffusion. Gently clean by rinsing in warm water and drying with a soft cloth.
The amethysts pictured may have been treated or enhanced by heating.
The citrines pictured may have been treated or enhanced by heating. Gently clean by rinsing in warm water and drying with a soft cloth.
The garnets pictured may have been treated or enhanced by heating.
The peridots pictured may have been treated or enhanced by heating. Gently clean by rinsing in warm water and drying with a soft cloth.
Tourmaline is commonly subject to heating and irradiation and enhancement processes using wax, oil or resin, which may not be permanent and may require special care. Gently clean by rinsing in warm water and drying with a soft cloth. Avoid temperature changes, chemicals, steaming and ultrasonic cleaning.