Coco Chanel ?

Hi everyone,
Just wondered if you folks think this could be a genuine Chanel ring or not ? It’s owned by a friend of mine who purchased it from a UK jewellers used around 30 years ago and it was described as being by Chanel,there is no paperwork to prove this,it doesn’t have any hallmarks or stamps,I tested it and it’s 9ct possibly 10ct yellow gold and the stones are clear but don’t test as diamonds the stones are set in white gold or platinum.I’ve done some research and apparently some of the early pieces of Chanel were sometimes unmarked.If there’s anyone who knows a bit about Chanel on here I would love to hear your opinion,also point me in the direction of someone who might be able to tell me.
Thanks
Ray