Men's Gents 18Ct Gold 9.3g Signet Ring Set With Lapis Lazuli

We have for sale this vintage men's gents 18 carat yellow gold signet ring set with lapis lazuli stone. The ring has London hallmark 18 for 18 carat gold and date letter for 1969.
The front of the ring measures approx. 14mm or 1/2'' at the widest part. The stone measures approx.11.7mm by 10.4mm.

The weight of the ring is 9.3grams.
The UK size is S 1/2 and US size is 9 3/8 by the leading edge.
The box shown is just for photos.
Condition : the ring is in good used condition, some abrasion to the surface of the stone (please see video).
Ref.number: 19/29