diff --git a/data.lua b/data.lua
index d0cc3b4..56abb59 100644
--- a/data.lua
+++ b/data.lua
@@ -4,6 +4,7 @@ require("prototypes/silicon-recipe")
 require("prototypes/optical-fiber")
 require("prototypes/gyro")
 require("prototypes/razorgrass")
+require("prototypes/stone")
 require("prototypes/basic-crusher")
 require("recipes/silica-matter")
 
diff --git a/locale/en/silicon.cfg b/locale/en/silicon.cfg
index b57f498..dbc8814 100644
--- a/locale/en/silicon.cfg
+++ b/locale/en/silicon.cfg
@@ -49,6 +49,7 @@ silica=__ITEM__silica__
 silicon=__ITEM__silicon__
 optical-fiber=__ITEM__optical-fiber__
 razorgrass-ash-washing=Silica from ash
+stone-from-lava=Stone from lava
 
 [recipe-description]
 razorgrass-dried=A furnace is required to dry razorgrass release its seeds.
diff --git a/prototypes/stone.lua b/prototypes/stone.lua
new file mode 100644
index 0000000..286e962
--- /dev/null
+++ b/prototypes/stone.lua
@@ -0,0 +1,31 @@
+local util = require("data-util")
+if mods["space-age"] then
+  data:extend({
+  {
+    type = "recipe",
+    name = "stone-from-lava",
+    icons = {
+     {icon = "__space-age__/graphics/icons/fluid/lava.png", icon_size=64, shift={0,-8}},
+     {icon = "__base__/graphics/icons/stone.png", icon_size=64, scale = 0.333, shift={0,8}},
+    },
+    category = "metallurgy",
+    subgroup = "vulcanus-processes",
+    order = "a[melting]-a[lava-a]",
+    auto_recycle = false,
+    enabled = false,
+    ingredients =
+    {
+      {type = "item", name = "calcite", amount = 1},
+      {type = "fluid", name = "lava", amount = 500},
+      {type = "fluid", name = "water", amount = 250},
+    },
+    energy_required = 16,
+    results =
+    {
+      {type = "item", name = "stone", amount = 25},
+    },
+    allow_productivity = true
+  },
+  })
+  util.add_unlock("foundry", "stone-from-lava")
+end