Results 271 to 280 of about 10,184 (280)
Some of the next articles are maybe not open access.

bleaching gemstone

2009
openaire   +1 more source

Silica Gemstones

openaire   +1 more source

flat gemstones

2009
openaire   +1 more source

Gemstone Constants

1983
openaire   +1 more source

coated gemstones

2009
openaire   +1 more source

new gemstone

2009
openaire   +1 more source

treated gemstones

2009
openaire   +1 more source

heated gemstone

2009
openaire   +1 more source

medicinal gemstones

2009
openaire   +1 more source

ON GEMSTONES

openaire   +1 more source
gemstones
gemology
quartz
infrared spectroscopy
mineralogy
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