Wingstone is a gnome traveller wandering the desert between Nardah and the Agility Pyramid. Players who have to deliver food to him during the Gnome Restaurant minigame may find it difficult to immediately locate him due to his large wander radius.
Gianne's cook book also mentions that Wingstone is responsible for bringing the human idea of making pizza to the Tree Gnome Stronghold, eventually resulting in the creation of the cheese and tomato batta.
Gnome Restaurant tips
Please note that the amounts of the rewards are incomplete and are being updated with the variable range of the items given.
Item Quantity Rarity GE market price Uncut ruby 2–3 (noted) Uncommon 2,754–4,131 Uncut opal 2–3 (noted) Common 290–435 Uncut red topaz 1 Uncommon 3,657 Uncut sapphire 6–16 (noted) Uncommon 3,216–8,576 Uncut emerald 3–5 (noted) Uncommon 2,226–3,710 Uncut diamond 1 Uncommon 2,738
Item Quantity Rarity GE market price Bird nest 1 Uncommon 3,498 Gnomeball 1 Uncommon Not sold Loop half of key 1 Rare 9,771 Tooth half of key 1 Rare 9,246 Mint cake 1 Rare  2,303 Snake charm 1 Rare Not sold Grand seed pod 5 Rare  740,520