Necklace Necklace

Old jade necklace
Carved from one piece.
Real Jade
It’s hollow. Carved on both sides and the inside.
Many different colors.
White, clear, green, amber, yellow and more.
I don’t know the exact age but it was purchased at an antique shop in the 80s.
It says “hearts connected forever” in Chinese script.
The beads are metal with patina.
And I think the string is silk.
I’m not an expert on the age of these things so please do your own research.
Its about 2.5 inches diameter and about 1/4 inch thick.