Moss agate is form of chalcedony. It does not actually contain organic matter, the green color comes from green minerals. It is not considered a true agate as it lacks agate's defining feature of concentric banding.
Colichemarde smallsword with a silver guard, 18th century. The abrupt narrowing of the blade, the defining feature of the colichemarde, is visible. Vevey historical museum.
Here is why Satya Nadella thinks Continuum is the defining feature of Windows 10 Mobile
Mobile Computing, Windows 10, Features Of, Microsoft
L'Oréal Infallible Pro-contour palette in Deep NWT