Length of pendant: 6.2 cm / 2.44 inch
Top width of pendant: 1.4 cm / 0.55 inch
Bottom width of pendant: 3.2 cm / 1.26 inch
Firstly, avoid jewelry's contacting with chemicals.
Secondly, do not wear it when you bathe, sleep or sweat excessively.
Most importantly, avoid being hit or scratched.
Last but not least, wipe it with a clean and soft cloth.