RuneScape Classic Wiki
RuneScape Classic Wiki
The main RuneScape Wiki has an article on: Sapphire ring
The Old School RuneScape Wiki also has an article on Sapphire ring.

A Sapphire ring is a useless item that can be made with the Crafting skill. It is made by using a gold bar on a furnace while having a ring mould and a sapphire in the character's inventory, and a crafting level of at least 8. This provides 40 crafting experience.

Like all rings, it cannot be equipped in RuneScape Classic. Its only use is to be turned into coins.

Sold in

Shop Location Stock
Grum's Gold Exchange Port Sarim 0