Corundum:
For Rubies and Sapphires follow basic jewelry care above.
Diamond:
Follow basic jewelry care above.
Pearl:
Have strands cleaned and restrung annually if worn regularly. Avoid
sudden temperature changes and contact with cosmetics, hair spray,
perfume or household chemicals.
Beryl:
Do not use an ultrasonic cleaner, as emeralds are too delicate
for them. Avoid sudden temperature changes and contact
with cosmetics, hair spray, perfume or household chemicals. Do
not wear emerald jewelry while exercising or doing household
work.