Results 261 to 270 of about 4,649 (283)

stained gemstone

2009
openaire   +1 more source

Gemstone Simulants

1988
openaire   +1 more source

Gemstone Nomenclature

The Journal of Gemmology, 1948
openaire   +1 more source

fabricated gemstones

2009
openaire   +1 more source

engraved gemstone

2009
openaire   +1 more source

Synthetic gemstones

Quarterly Reviews, Chemical Society, 1961
openaire   +1 more source

gemstone cuts

2009
openaire   +1 more source

backing gemstones

2009
openaire   +1 more source

Gemstones Galore

Rocks & Minerals, 1975
openaire   +1 more source

Gemstone constants

1991
openaire   +1 more source