NOTE: This order is what I find to be the best at avoiding going back and forth unnecessarily. The in-game list is in a different order and will often make you go back on yourself.
1. Under the middle bridge spanning Loch Abhain
2. On a ledge above a pool in the back of Breakwater Cave
3. By a beach near the bridge on High Isle's southern coast
4. High above the river across from the Firepot
5. In the shadow of All Flags Castle's north wall
6. At one end of a natural bridge in the heart of the Firepot
7. Hidden in the rocks above Jheury's Cove on High Isle
8. Guarded by the dead in Death's Valor Keep
9. Just west of a pointed rock on High Isle's northernmost beach
10. At the end of a winding path high above Shipwreck Shoals
11. In the hedge maze of the Spire of the Crimson Coin
12. Overlooking the volcanic vent north of Tor Draioch
13. Hidden high among the rocky ridges of Whalefall
14. By a bay full of wrecked ships along Skulltooth Coast
15. On the shore of the Flooded Coast below Snake's Eye View
16. By a blue tree within the caverns of Coral Cliffs
17. Follow a climbing path on the southern side of Ghost Haven Bay
18. In the heart of the river canyon east of Amenos Station
