Master of Business Administration
Certified Intensive Care Paramedic
In cricket, it means "right handed batsman."
It may be the trademark for the name of the jewelery company it's from or perhaps a certain someones initials.
RD stand for Registered Dietitian and means this person is accredited.
It's probably someones initials.
In Canada those with CD after their name could also refer to the Efficiency and Long Service Decorations and Medals - Canadian Forces Decoration - CD
cce is a grading system
The full form of CCE is Continous Comprehensive Evalution
One can have many things engraved at a key holder. A person can engrave a personal message, an inspiring quote, someones initials, a simple image or a name.
I believe that those letters stand for someones initials.
Your initials are the reference initials. Like if your name is Konnor Krack Kid then your initials would be "KKK"