000 00506 a2200253 4500
001 94999
020 _a0-7506-3173-2
041 _aeng
080 _a553.80'D
245 _aSynthetic, imitation and treated gemstones
250 _a
260 _aOxford
260 _bButterworth-Heinmann
260 _c1999
300 _ax,203 p.
300 _c23 cm
490 _a
100 _aO'Donoghue, Michael
700 _a
650 _a
650 _aGems , Precious stones
942 _cBK
942 _2UDC
999 _c44746
_d44746