irreplaceable
adjective
[ ɪrɪˈpleɪsəb(ə)l ]
• impossible to replace if lost or damaged.
• "do not send valuable or irreplaceable photographs"
Similar:
unique,
unrepeatable,
incomparable,
unparalleled,
priceless,
invaluable,
beyond price,
without price,
inestimably precious,
of incalculable value/worth,
of inestimable value/worth,
of immeasurable value/worth,
worth its weight in gold,
treasured,
prized,
cherished,
