@@ -27,19 +27,27 @@
 	else
 		minetest.register_craftitem(shardname, {
 			description = sorcery.lib.str.capitalize(name) .. ' shard';
 			inventory_image = 'sorcery_gem_' .. name .. '_shard.png';
-			groups = { sorcery_shard = 1; };
-			_proto = gem;
+			groups = { gemshard = 1; crystalshard = 1; sorcery_shard = 1; };
+			_sorcery = {
+				material = {
+					gem = true;
+					id = name, data = gem;
+					raw = true, value = 1;
+				};
+			};
 		})
 	end
 	if not gem.foreign_amulet then
 		minetest.register_craftitem(amuletname, {
 			description = sorcery.lib.str.capitalize(name) .. ' amulet';
 			inventory_image = sorcery.lib.image('sorcery_amulet.png'):multiply(sorcery.lib.color(gem.tone)):render();
-			_proto = {
-				id = name;
-				data = gem;
+			_sorcery = {
+				material = {
+					gem = true, id = name, data = gem;
+					value = (5 * shards_per_gem) + 4;
+				};
 			};
 		}) 
 	end
 	minetest.register_craft {
@@ -128,10 +136,15 @@
 	if gem.foreign then return false end
 	minetest.register_craftitem(itemname, {
 		description = sorcery.lib.str.capitalize(name);
 		inventory_image = 'sorcery_gem_' .. name .. '.png';
-		groups = { sorcery_gem = 1; };
-		_proto = gem;
+		groups = { gem = 1; crystal = 1; sorcery_gem = 1; };
+		_sorcery = {
+			material = {
+				id = name, data = gem;
+				raw = true, value = shards_per_gem;
+			};
+		};
 	})
 	local tools = gem.tools
 	if tools == nil then tools = {
 		'group:pickaxe';