These concretions really should not be baffled for the gemstones also known as ‘moonstones’, which are sodium potassium aluminium silicates, normally product of the mineral Adularia. I clumsily pick up a stainless-steel hammer and a chisel within the cabinet. I mimic chipping a corner off of the imaginary sample. https://rowanbhlld.laowaiblog.com/28210225/the-basic-principles-of-moon-rocks-australia