Identifying plant/symbol on Victorian bracelet

[thismeanswardrobevintage]

I thought it was a Scottish thistle, but the smooth bulb on top is throwing me.  I assumed was a Victorian mourning bracelet and thistles were fairly common, but I don't know what this is.  Thank you in advance.  

[elvyyu]

Could it be an acorn?

[thismeanswardrobevintage]

Yes!  I can't believe I didn't realize that lol.  The leaves really threw me.  Thank you for your response!