The Riverstone is the simplest edge stone. Drawn along a worn tool or weapon, it restores 25% of its full edge. It needs no Jewels, so you can make it from your first day.
In-game description
A smooth, flat stone out of a stream, worn fine by the water. Drawn along a worn edge, it restores 25% of the edge.SHOWN ON ITS CARD IN YOUR PACK
Using it
Open your pack, choose the Riverstone, then choose the tool or weapon to sharpen. Only things that have lost some edge can be chosen. One stone is used, and the edge goes up by a quarter of its most (at least 1). See Edge.
Making it
Made at a Crafting Table, on the MISC page: 3 Stone, 1 Earth spirit and 1 Water spirit. The cost is the same on every metal's page.
How to get it
| Source | Amount | Chance | Where / how |
|---|---|---|---|
| 1 | MADE | Misc page: 3 Stone, 1 Earth 1 Water spirits |
Grinding
The Grinder turns 10 of it into:
| Grinder | Share | From 10 |
|---|---|---|
| Grindstone | 50% | 10 Stone, 3 Water 3 Earth |
| Treadle Grinder | 70% | 14 Stone, 4 Water 4 Earth |
| Spirit Mill | 90% | 18 Stone, 6 Water 6 Earth |
Trading
Village traders pay about 2 spirits for one. Prices change a little by land and by the spirit you pay in: see Traders.