It can mean a whole host of things: in Christianity, it is commonly used to denote the Trinity, it was a favorite of Celtic Christianity. However, it has also been used by various pagan groups and new agers.
rocket
It means someone lost a guardian angel pendant. Nothing else.
During the vacation. (:
nothing
for/during an hour
Trinity can be translated in German as: Dreieinigkeit Dreifaltigkeit Trinität
Trinity
When Christians refer to the trinity, they mean the Holy Trinity: The Father (God), the Son (Jesus), and the Holy Spirit. They are all considered God though they are different aspects of him.
"Pendant le jour il était ..." means "during the day he was ..." in French.
It means its 14 Karat Gold.
Pendant means during or meanwhile in French. It can also be a form of the verb "pendre", to hang.
There is no specific meaning of the circle pendant. It can mean anything you would like it to. Most people like to thing that love lasts forever.