Congrats on the ring find! You never know what is going to be lost in the back or bottom of desks, chests and dressers or even lost in old couches or sofas (**). To be honest, if you have the Pearl removed and replaced with a Ruby that is similar in size or a little larger than the others, it will likely enhance the appearance (eye appeal) of the ring.
(**)
My Mom and Dad bought an old and ugly green couch when I was about 7 or 8 years old which would have been 1960 or 1961. My Dad had been out of work due to having surgery and recuperating and had just gone back to work, they were broke and we had very little food in the house. My Mom asked me to look through the old couch for any change I could find so she could get a few things from the store. My Dad was left handed due to having fallen off a Freight Train when he was 18 years old and was crippled in his' right hand, so I looked on the side he normally sat on the couch (left side if sitting in it) but there was not much on that side or even across the back. However, I reached my' hand into the right corner of the couch and there was a pile of coins sitting on a cross-ways corner brace and there were so many coins that many were falling into the bottom. I dug everything out that I could get from on and around that corner brace which was nearly $20 in everything from Cents to Half Dollars and then we flipped the sofa up, removed the bottom cover on that end and close to $10 fell out. My Mom cried like a baby when she counted all the change we got out of the old couch.
