Buy RS3 Uncut sapphire
The uncut sapphire is a blue gem in RuneScape 3. It is used to train Crafting and Fletching. With level 20 Crafting, you can cut it into a sapphire and earn 50 Crafting experience. The cut sapphire can be made into sapphire jewellery. At level 56 Fletching, a sapphire can be cut into 12 sapphire bolt tips for 4 Fletching experience.
Uncut sapphires have other uses too. With level 26 Divination, you can transmute 3 uncut sapphires and 2 bright energy into 1 uncut emerald for 5.7 experience. The gem can also be disassembled for materials like clear parts, delicate parts, smooth parts, precious components, light components, and faceted components.
In the game, these gems come from mining gem rocks, cracking wall safes in the Rogues' Den, killing monsters, and rewards from Distractions and Diversions. They are also common rewards from the Gnome Restaurant minigame and Miscellania's kingdom.
Buying uncut sapphires saves you time. You skip the grind of mining and monster drops and get right to training your Crafting and Fletching levels. The item is tradeable and weighs almost nothing at 0.003 kg.