Commodity Code

topaz

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

definition Topaz is a common gemstone that has been used for centuries in jewelry. Topaz is the hardest silicate mineral and one of the hardest minerals in nature. more like this
notation
01.03.35 more like this
Tpz more like this
source http://www.galleries.com/Topaz more like this
type
Resource
Concept
broader gemstones
narrower topaz
in scheme commodity code
is primary topic of topaz