Outline for initial flow idea.

GemStacker.lua

@@ -1,5 +1,29 @@
 GemStacker = LibStub('AceAddon-3.0'):NewAddon('GemStacker','AceConsole-3.0','AceEvent-3.0');
 local core = GemStacker;
 
+function core:OnInitialize()	
+
+end
+
+function core:OnEnable()
+	self:RegisterEvent('COMBAT_LOG_EVENT_UNFILTERED','CheckGemCut');
+end
+
+function core:CheckGemCut(_,event,_,sourceGUID,sourceName,_,_,_,_,_,_,spellSchool)
+	if(not gemCasts[spellSchool]) then return end;
+	
+	self:RegisterEvent('BAG_UPDATE','StackGem');
+end
+
+function core:StackGem(container)
+	--find the item (tricky?)
+
+	--check all bags to see if there is an existing stack
+	
+	--if there is an existing stack and it is not max, stack the new gem on the old stack
+
+	self:UnregisterEvent('BAG_UDATE');
+end
+
 --BAG_UPDATE - container
 --SPELL_CAST_START