Vintage Chinese Jade Ring from Estate

Description

A beautiful vintage jade ring from my Mother's estate.  Ring is approximately a size 7, weighs 3 grams, and 18kgp is stamped inside the ring.  Jade appears to be in excellent condition but metal ring shows minor wear due to age.
Please note, I am not an expert on jade nor any kind of jewelry.  This ring has been in her possession for the last 30 to 50 years and most likely obtained in Hong Kong/China.