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 garnets pictured may have been treated or enhanced by heating.
Topaz may be subject to enhancement processes or treatments such heating, irradiation and diffusion, which may not be permanent and may require special care. Gently clean by rinsing in warm water and drying with a soft cloth, and avoid chemicals, strong light, heat and ultrasonic cleaning.
