Precious stone perhaps I ordered (8)
I believe the answer is:
sapphire
'precious stone' is the definition.
(I've seen this before)
'perhaps i ordered' is the wordplay.
'ordered' indicates an anagram.
'perhaps'+'i'='perhapsi'
'perhapsi' anagrammed gives 'SAPPHIRE'.
(Other definitions for sapphire that I've seen before include "Birthstone for September" , "sparkler" , "Corundum gemstone" , "precious item" , "Deep blue colour" .)