Commodity Code

spinel-gemstone

http://resource.geosciml.org/classifier/cgi/commodity-code/spinel-gemstone

definition The Spinel Group contains over twenty members, but only a few are considered common. They are a group of oxides that have very similar structures. Named after their sole gemstone representative, spinel, this is an important group of minerals. more like this
notation
01.03.32 more like this
SplGe more like this
source http://www.galleries.com/Spinel_Group more like this
type
Resource
Concept
broader gemstones
narrower spinel gemstone
in scheme commodity code
is primary topic of spinel gemstone