Ruby is usually not recycled because it is difficult to resell. The market of ruby is very small, because only a few people like it, which leads to the unpopularity of ruby recycling in the market.

Another reason is that rubies are not as easy to process as gold and silver. Jewelry recyclers usually melt jewelry in order to turn it into a new design, but rubies are not suitable for this treatment. Therefore, jewelry recyclers are reluctant to accept rubies.

In addition, ruby is a natural gem, which is usually more expensive than artificial gem because of its rarity. Recyclers usually prefer to buy artificial gem because they are cheaper and easier to process.

In short, if you are looking for a jewelry recycling service, you may not find a recycler who is willing to buy rubies. However, that doesn't mean you can't sell your ruby. You can try to contact the jewelry store to see if they are willing to buy your ruby. In addition, you can also try the online auction website to find buyers who are interested in rubies.