Results 191 to 197 of about 1,971 (197)
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Identification of gemstones

Choice Reviews Online, 2003
openaire   +1 more source

Gemstone Constants

1983
openaire   +1 more source

Burma gemstones

2009
openaire   +1 more source

Gemstone Identification

2003
openaire   +1 more source

naming of gemstones

2009
openaire   +1 more source

setting gemstones

2009
openaire   +1 more source

Grue Gemstones

openaire   +1 more source
gemstone
precious stones
precious metals
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